2024 Frost line map illinois

A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.. 5 day weather forecast for saint louis missouri

Tollway customers can "follow" each of the five tollways - the Tri-State Tollway (I-94/I-294/I-80), Jane Addams Memorial Tollway (I-90), Reagan Memorial Tollway (I-88), the Veterans Memorial Tollway (I-355), and the Illinois Route 390 Tollway - to receive real-time roadway incident and pavement condition information to help plan their trips.More than 800,000 acres of Illinois land has been undermined for coal and minerals, according to the geological survey, and about one-fourth of that acreage is residential or "built-up" land. An estimated 330,000 homes in the state are built above coal mines. Much of St. Clair and Madison counties are undermined.In the United States, predictions of the frost depth for foundation design have been performed using maps that were developed decades ago prior to the significant climate changes we experience nowadays. In this study, we will revisit these maps with the sole aim of assessing their accuracy considering recent weather trends.Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F. In the 32F/28F Freeze Maps section, you'll find national …Generally, the coldest U.S. states have the deepest frost lines. Alaska 's is the deepest at 100 inches, followed by Minnesota with 80 and North Dakota with 75. What is the frost line? The frost line is simply the deepest point in the ground to which ground water will freeze. It's also referred to as the frost depth.Check out these businesses for sale in Illinois right now. Your next opportunity is waiting for you! Have you ever thought about diversifying your revenue sources by purchasing a p...The Illinois State Water Survey maintains a network of 19 soil temperature sites across the state that measure temperatures at 4 and 8 inches. You can look at maps for 10 am , any hour of the day, high for the day, low for the day, under sod, and under bare soil.You have a small 20% chance of getting 32° by October 5. There is a 50% chance of being hit by a 32° frost starting around October 16. You have a 80% chance of seeing 32° by October 27. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.A water line should be buried 4-6 below the lowest depth of frost in the ground so that it doesn't freeze and burst. The lowest frost point varies based on your climate and the quality of your soil. Call 811 to make sure that there are no cables, wires, or sewer lines in the ground so that you don't damage them when you bury a water line.Alternately, there are many frost line depth maps that display that average frost line maximum for the region. 3. Frost heave can damage foundations, footings, and other important structural elements.1809.5Frost protection. Except where otherwise protected from frost, foundations and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: 1. Extending below the frost line of the locality. 2. Constructing in accordance with ASCE 32. 3. Erecting on solid rock. Exception: Free ...Metadata for the historical frost depth data: click here to open metadata.txt in a new tab; Frost depth data for the past seven days: click here to download .csv; Historical thawed depth (depth of surface frost thawed) data (2004-2023): click here to download zipped .csv ; Links to some additional resources:For most of this winter, the frost depth has run in the neighborhood of 10 to 20 inches across Illinois with a few sites going deeper. Here is a screenshot of this morning’s map. While it doesn’t work on the screen shot, you can mouse-over the points on the map on the website and see the individual reports. Finally, Wayne Wendland, the ...Chapter 18 Soils and Foundations: Soils and Foundations, Illinois Building Code 2018 | UpCodes. User notes: About this chapter: Chapter 18 provides criteria for geotechnical …The frost line in Illinois is 40 inches, so the water in the soil has not been known to freeze deeper than that point. In Chicago, building codes require that concrete supports be poured at a depth of at least 3 feet 6 inches. The frost line marks how deeply below the surface that ground water typically freezes. ... This frost line map provides ...Frost Climatology. The average date ranges from October 7 in far northern Illinois to October 21 or later in far southern Illinois (see map below). The actual date varies from year to year. For tender plants in the fall, subtract two weeks from the average date to protect against an early frost.Sep 25. Sep 28. Sep 30. Oct 2. Oct 4. Oct 7. Oct 9. Oct 13. Now that you know your frost dates, use our Garden Planting Calendar for Moline, Illinois to know when to sow and transplant your various vegetable plants!The McHenry County PlanDev Viewer is an interactive map that provides residents and businesses the ability to easily access zoning and land use information. This information includes current zoning, proposed zoning, proposed subdivisions, existing land use, and proposed 2030 land use. For more information please contact Planning and Development ...With out Migration Map, you can stay in the know on duck counts, waterfowl surveys, and migration reports from across the country. Our Migration Map is updated daily throughout the season, is interactive with various species and observable date ranges, and is completely free-to-use, so be sure to check it out! Migration Map.Illinois Frost Line. Back To Map. Illinois Extreme Frost Line Penetration (in inches) State Average Frost Depth: 36″. Source: U.S. Department of Commerce.You have a small 20% chance of getting 32° by September 30. There is a 50% chance of being hit by a 32° frost starting around October 12. You have a 80% chance of seeing 32° by October 24. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Illinois. The minimum frost depth for Illinois is not defined statewide and varies by jurisdiction. Frost depths for the three most populous cities in Illinois are given below. Chicago: 42″ (2019 Chicago Building Code, Section 1809.5) Aurora: 42″ (City of Aurora Code of Ordinances, Chapter 12, Division 12-II-7, Section 12.17-6, Table R301.2(1))Salvage titles are given to vehicles that have sustained so much damage in a wreck that the cost of repairs exceeds the value of the car. In Illinois, vehicles with salvage titles ...Chicago, IL - In the midst of a severe cold snap, residents throughout northern Illinois have been startled by mysterious booming sounds and vibrations, indicative of frost quakes, or cryoseisms.. The natural phenomenon occurs when a rapid drop in temperature causes groundwater beneath the surface to freeze quickly, resulting in a sudden expansion that puts immense pressure on the ...Posted 7/31/2008 12:24 (#425616 - in reply to #425578) Subject: RE: Illinois---water line depth for frost: Casey Illinois: I am about 200 miles south of the big town and we put ours down at 40 inches and have never had a problem, just do not set the spigot on a brick, ain't a good thing. Just my experience41.7. 41.38″. 23.2″. The average date of the last spring frost is April 15. The average date of the first fall frost is October 17. The record high is 109 on July 14, 1954. The record low is -25 on four (!) occasions: 9 Feb 1899, 13 Feb 1905, 19 Jan 1994, and 5 Jan 1999. The maximum seasonal snowfall was 67.2 inches in the winter of 1977-78.In the United States, predictions of the frost depth for foundation design have been performed using maps that were developed decades ago prior to the significant climate changes we experience nowadays. In this study, we will revisit these maps with the sole aim of assessing their accuracy considering recent weather trends.Browse all Frost Bank locations in TX for your personal and business banking, investments and insurance needs. LOG IN. Login Help; Sign Up; Other Logins; Call 24/7 (800) 513-7678; Contact Us; Locations; OPEN AN ACCOUNT. PERSONAL; BUSINESS; TECHNOLOGY; SECURITY; WHY FROST? OPEN AN ACCOUNT. All Financial Centers ...Additional Gardening Related Climate Data for ZIP Code 60629 - Chicago, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. 2012 Hardiness Zone: Zone 6a: -10°F to -5°F. 1990 Hardiness Zone: Zone 1b: -15F to -10F. Average First Frost Date: October 21 - 31.With out Migration Map, you can stay in the know on duck counts, waterfowl surveys, and migration reports from across the country. Our Migration Map is updated daily throughout the season, is interactive with various species and observable date ranges, and is completely free-to-use, so be sure to check it out! Migration Map.The nationwide average water service line depth is 4.58 feet, but in Illinois, water lines are typically buried at a depth of 3.17 feet on average. How deep are sewer lines buried in Illinois? Water and sewer lines that are placed in trenches 24 inches in width or less will be buried a minimum of 42 inches (60 inches is suggested by the IL Dept ...List of Average Last Frost Dates for Locations in Illinois. Location. Average Last Frost Dates. Addison. May 11 - May 20. Algonquin. May 11 - May 20. Alsip. May 1 - May 10.The depth of the groundwater in the soil that is expected to freeze is called the frost line. Frost line, also known as frost depth is determined to know how deep the frost can penetrate the ground. According to the Federal Highway Administration, the maximum depth of the frost line ranges from 0 to 8 feet in the contiguous United States.Illinois Frost Line. Back To Map. Illinois Extreme Frost Line Penetration (in inches) State Average Frost Depth: 36″. Source: U.S. Department of Commerce.Received 60 Upvotes on 54 Posts. According to the map of frost depth in Illinois that I have you in Cook county show frost depth at 25 to 30 inches. so anything over 30 inches deep should be fine. They probably had a trencher with a 36 inch bar so that is why the water line is that depth.The frost line shall be forty two inches (42") below grade. B. Concrete shall not be poured unless the outside temperature is at least twenty eight degrees Fahrenheit (28°F) and rising. If so, insulated blankets and tarps, as well as straw covered with …Topographic Map of Illinois showing the location of major metropolitan areas: Chicagoland, Greater St. Louis, and the Quad Cities. The state's major rivers are the Ohio, the Mississippi, the Wabash, the Kaskaskia, and the Illinois rivers. In the flat landscape of Illinois, the highest point is the banana-shaped Charles Mound at 376 m (1,235 ft1. The USDA Hardiness Zone Method. To find the average frost dates for your region, you first need to determine your hardiness zone or planting zone. You can do this by using our planting zone map tool. Click on your state to zoom in or enter your zip code to find the zone number of your specific area. Frost dates can vary widely within each ...Additional Gardening Related Climate Data for ZIP Code 60629 - Chicago, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. 2012 Hardiness Zone: Zone 6a: -10°F to -5°F. 1990 Hardiness Zone: Zone 1b: -15F to -10F. Average First Frost Date: October 21 - 31. When excavating your deck footings, you'll need to dig below the frost line. Find out how deep the frost line is in your area with our frost depth map at Decks.com. Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F. In the 32F/28F Freeze Maps section, you'll find national and regional maps from the Midwest Regional Climate Center (MRCC) that depict the typical dates for freezes in the early fall, and ...Sep 24. Sep 26. Sep 29. Oct 1. Oct 3. Oct 5. Oct 8. Oct 12. Now that you know your frost dates, use our Garden Planting Calendar for Aurora, Illinois to know when to sow and transplant your various vegetable plants!This map is from the National Snow and Ice Data center and shows the frost line map across the United States. Which is the coldest state with the deepest Frost lines? Generally, the coldest U.S. states have the deepest frost lines. Alaska 's is the deepest at 100 inches, followed by Minnesota with 80 and North Dakota with 75.Comments. The snowfall year-to-date starts on September 1. Sometimes the daily updates of these maps fail, in which case the maps for the Midwest from the Applied Climate Information System are a possible substitute.. The data used in these products come from the National Weather Service (NWS) Cooperative Observer Program (COOP). This … Back To Map Wisconsin Extreme Frost Line Penetration (in inches) State Average Frost Depth: 65″ Source: U.S. Department of Commerce The depth of the frost line depends on your geographic location, as it varies by climate and soil type. Generally speaking, most places require digging below the frost line to four to six feet. In colder climates, such as the northern United States, the frost line can be as deep as eight feet. It's important to take into account the amount of ...The International Plumbing Code states that “Exterior water supply system piping shall be installed not less than 6 inches (152 mm) below the frost line and not less than 12 inches (305 mm) below grade.”. Above the frost line, the ground can heave up, shifting whatever is in it, or freeze the pipes’ contents. To avoid these issues ...Overall, April average temperatures ranged from the low 30s in northern Illinois to the mid-50s in southern Illinois. April was cooler than normal across the state. The preliminary statewide average April temperature was 49.2 degrees, 3.4 degrees cooler than normal and the 27 th coldest on record back to 1895.Precipitation Deficits. May was unusually dry across much of northern Illinois, with the largest deficits of 2 to 3 inches below the 1991 to 2020 average in northeast Illinois. May followed very dry months in March and April, and climatological spring precipitation ranged from 25% to 60% of the 1991 to 2020 average in northeast Illinois. Figure 2.The median last date of a 32-degree freeze in Illinois. Source: Illinois State Water Survey, Illinois State Climatologist. Spring frost-free dates vary year to year. The Illinois State Water Survey and Illinois State Climatologist have frost maps with temperature data from 1991 to 2020. The spring maps are for the first and last dates of the ...The frost line is the depth to which ice, or frost, penetrates into the ground. Though the factor is often an afterthought in terms of general weather information, it is very important for building codes. The frost depth is determined by a variety of factors including the temperature, the length of time the air temperature remains below ... Additional Gardening Related Climate Data for ZIP Code 60441 - Lockport, Illinois. 2023 Hardiness Zone: Zone 6a: -10°F to -5°F. Zone 5b: -15°F to -10°F. 2012 Hardiness Zone: Zone 5b: -15°F to -10°F. 1990 Hardiness Zone: Zone 1b: -15F to -10F. Average First Frost Date: According to the Federal Highway Administration, the maximum frost depth ranges between zero to eight feet north in the contiguous United States. Here are the 10 states with the deepest frost lines: Alaska - 100 inches. Minnesota - 80 inches. North Dakota - 75 inches. Maine - 74 inches.The Illinois Tollway is advising I-PASS customers to disregard phishing texts being sent to their phones from "Illinois toll way" that detail a specific outstanding toll amount. If you receive a text and are unsure, please login below or call our customer service center at 1-800-UC-IPASS (1-800-824-7277) from 7 a.m. to 7 p.m. on weekdays. ...Main Office: 141 South Main Street, Suite 401 Decatur, IL 62523 Contacts: Phone: (217) 424-1364 Fax: (217) 424-1374 email: [email protected] Hours: M-F 8:30 a.m. to 4:30 p.m. excluding legal holidays Links Interactive Map Macon County GIS Links Downloads Job Opportunities Geographic Information Systems (GIS) AThe Pipeline and Hazardous Materials Safety Administration has developed the Pipeline Information Management Mapping Application (PIMMA) for use by pipeline operators and federal, state, and local government officials only. The application contains sensitive pipeline critical infrastructure information that can be viewed via internet browser ...The frost line —also known as frost depth or freezing depth —is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt ...Wundermap. Frost & Freeze Today. Learn About Frost & Freeze Today. The Frost and Freeze map shows where frost cant be expected and where temperature are forecast to …The Township, Range, Section, Principal Meridian, County, State and Longitude/Latitude will be displayed above the map. As you click on townships, sections and aliquot parts smaller than a section (such as quarter sections), the approximate area in acres (square miles for townships) will be shown for the yellow-highlighted unit.Moline, Illinois Hardiness Zones. According to the 2023 USDA Hardiness Zone Map Moline, Illinois is in Zones 5b (-15°F to -10°F). There is no change from the 2012 USDA Hardiness Zone Map which has Moline in also in Zones 5b (-15°F to -10°F). Hardiness Zones for MolineIllinois.Mar 25, 2024 · How to Get a Solid, Frost-proof Footing: When you pour concrete footings, hold the cardboard concrete form tube about 12 in. up from the bottom of the footing. Do this by nailing the sides of the tube to the center of a tic-tac-toe grid of 2x4s at the top of the hole. Then dump concrete through the tube into the bottom of the hole. Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F. In the 32F/28F Freeze Maps section, you'll find national and regional maps from the Midwest Regional Climate Center (MRCC) that depict the typical dates for freezes in the early fall, and ...October average temperatures ranged from the low 50s in northern Illinois to the low 60s in southern Illinois, between 1 and 2 degrees above normal in most places (Figure 2). Most of the state saw high temperatures in the upper 80s or low 90s in early October, including 94 in Quincy and 90 in Hoopeston. The brief taste of winter in the last few ...The frost line —also known as frost depth or freezing depth —is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt ...Received 60 Upvotes on 54 Posts. According to the map of frost depth in Illinois that I have you in Cook county show frost depth at 25 to 30 inches. so anything over 30 inches deep should be fine. They probably had a trencher with a 36 inch bar so that is why the water line is that depth.The National Weather Service is your best source for complete weather forecast and weather related information on the web!Dew and frost are actually the same phenomenon, except that dew occurs when the air temperature is above freezing while frost occurs when it is below. Both are condensation that oc...Illinois, United States has had: (M1.5 or greater) 0 earthquakes in the past 24 hours. 4 earthquakes in the past 7 days. 14 earthquakes in the past 30 days. 129 earthquakes in the past 365 days.Depending on the soil, one inch of rigid insulation is equal to approximately one foot soil depth, therefore if the frost line for your area is 4 ft deep, and you are installing a water line at the 3 ft mark, you must lay 1″ thick rigid insulation above the whole length the water pipe. Knowing the depth of the frost line in your area is very ...This graph is from the National Snow press Polar Data center and shows to frost line map across the United States. Note like it moves down from 72-inch depth to a 6-inch depth. The freeze cable, also recommended to as this frost depth, is the depth among which the groundwater in soil is expects to freeze. ...Some possible solutions: Drilling small seeds this year. Dragging pastures with a harrow after seeding. Avoid applying nitrogen fertilizer in pastures that will be over-seeded with legumes. Use inoculated seed. Achieve soil pH that is favorable for legumes (6.5 -7.5) All in all, overseeding legumes can still be successful this year.60637. 60120. 60506. Springfield IL ZIP Code 62704 Profile, Map, Demographics, Politics and School Attendance Areas - Updated April 2024.The Frost/Thaw line refers to the current allowable weights in place for a specific location in the Province of Alberta. Depending on the time of year, different parts of the Province may be at different allowable weights. The Province of Alberta monitors the frost and thaw depth through a network of thermistors located at 68 different ...Oct 28, 2021 · Alternately, there are many frost line depth maps that display that average frost line maximum for the region. 3. Frost heave can damage foundations, footings, and other important structural elements. A frost date is the average date of the last light freeze in spring or the first light freeze in fall. Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants. We would like to show you a description here but the site won’t allow us.Get Access. ABSTRACT. The goal of this paper is to determine the accuracy of US frost depth maps used to determine the foundation depth in cold regions. …A frost date is the average date of the last light freeze in spring or the first light freeze in fall. Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants.

ASCE Hazard Tool is a web-based application that allows you to quickly retrieve site structural design parameters specified by various ASCE standards, such as wind, seismic, snow, ice, rain, flood, tsunami, and tornado. You can also compare the results from different editions of the standards and access detailed information about the data sources and …. Coupon code for boston aquarium

Frozen roads and sidewalks result in cracks, pits and potholes. The same things happen below ground when the surrounding soil and water freeze. Frost lines matter because “anything above them can move when it freezes,” says Josh Risberg, Family Handyman’s set builder and one of the editors working on magazine’s The Getaway …The thermal conductivity is the rate of heat flow through a unit area under a thermal gradient (recall that 1 BTU is the energy (heat) required to raise the temperature of 1 lb of water 1 °F): Units: BTU/hr • ft 2 • °F/ft or BTU/hr • ft • °FFurther, k snow (loose) = 0.06, k snow (compact) = 0.20. In the range of water contents (5 to ...Texas Building Code 2018 > 18 Soils and Foundations > 1809 Shallow Foundations > 1809.5 Frost Protection. Go To Full Code Chapter. Except where otherwise protected from frost, foundations and other permanent supports of buildings and structures shall be protected from frost by one or more of the following methods: Extending below the frost line ...Planting Guides for Chicago. According to the USDA Chicago is in USDA Zone 6a. Here is some general info for USDA Zone 6a to help you get started. Average Date of Last Frost (spring) April 15. Average Date of First Frost (fall) October 15. Lowest Expected Low. -10°F.NOTICE - WARM has moved. Please update your links (replace 'www' in the URL with 'warm' or follow this link).Thank you.R403.3 Frost-protected shallow foundations.. For buildings where the monthly mean temperature of the building is maintained at not less than 64°F (18°C), footings are not required to extend below the frost line where protected from frost by insulation in accordance with Figure R403.3(1) and Table R403.3(1).Foundations protected from frost in accordance with Figure R403.3(1) and Table R403.3 ...Under code, generally, one-story buildings with footings on undisturbed soil with LBVs between 1,500 and 4,000 should have a minimum width of 12 inches. Two-story buildings require a minimum of …"Entered according to Act of Congress in the year 1873 by Frost & Mc. Lennan in the Office of the Librarian of Congress in Washington." LC Land ownership maps, 123 Available also through the Library of Congress Web site as a raster image.United States Hardiness Zones. The 'USDA Plant Hardiness Zone Map' outlines the different zones in which various types of trees, shrubs and plants will most likely survive. It is based on average extreme low temperatures over a 30 year period—not just the lowest temperature ever reached at any given time. Gardeners should understand that ...Creating and printing maps / geographical reports; ... Water Service Line Look-Up. Zoning Web Map. PDF Maps. Alderperson Ward Map. Census Tract Map. Deer Hunting Sites. ... 619 16th Street Moline, IL 61265. 309.524.2000. Quick Links. Staff Directory. Parks & Recreation. Utilities. Neighborhoods.The average depth of the frost line in Iowa is 58 inches. In the northern part of the state, the frost line can be up to 70 inches deep, while in the southern part the line may be ...The National Weather Service measures frost depth in Wisconsin from the beginning of November until the end of the spring thaw. Since the National Weather Service started measuring frost depth, the deepest measure was 24 inches in February 2009. Frost depth is normally deepest at the end of winter and the beginning of spring before surface ...Illinois Frost Dates and Growing Season Dr. Jim Angel, State Climatologist. Frost is the formation of thin ice crystals on the ground or other surfaces in the form of scales, needles, feathers, or fans. ... The maps represent the period of 1981 to 2010, to match the standard normals.Tollway customers can "follow" each of the five tollways - the Tri-State Tollway (I-94/I-294/I-80), Jane Addams Memorial Tollway (I-90), Reagan Memorial Tollway (I-88), the Veterans Memorial Tollway (I-355), and the Illinois Route 390 Tollway - to receive real-time roadway incident and pavement condition information to help plan their trips.This resulted frost heave can be detrimental until footings and foundations. That's reason b uilding codes specify basic footings be placement see aforementioned frost line. Add, water and sewer pipes need underground below the frost depth. The frost line map slide was drawn based-on on data from the U.S Department of Commerce.The frost line shall be forty two inches (42") below grade. B. Concrete shall not be poured unless the outside temperature is at least twenty eight degrees Fahrenheit (28°F) and rising. If so, insulated blankets and tarps, as well as straw covered with plastic sheets are required after pour.According to the Federal Highway Administration, the maximum frost depth ranges between zero to eight feet north in the contiguous United States. Here are the 10 states with the deepest frost lines: Alaska – 100 inches. Minnesota – 80 inches. North Dakota – 75 inches. Maine – 74 inches.This frost line map provides a general idea of where the frost line is in your area. If you live on the edge of the line, it's best to go with the recommendations of the colder side to avoid any issues. This map is from the National Snow and Ice Data center and shows the frost line map across the United States.Concrete shall have a minimum specified compressive strength of f' c, as shown in Table R402.2. Concrete subject to moderate or severe weathering as indicated in Table R301.2(1) shall be air entrained as specified in Table R402.2. The maximum weight of fly ash, other pozzolans, silica fume, slag or blended cements that is included in concrete mixtures for garage floor slabs and for exterior ...A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Precipitation Deficits. May was unusually dry across much of northern Illinois, with the largest deficits of 2 to 3 inches below the 1991 to 2020 average in northeast Illinois. May followed very dry months in March and April, and climatological spring precipitation ranged from 25% to 60% of the 1991 to 2020 average in northeast Illinois. Figure 2..

Frost line map illinois - List of Average Last Frost Dates for Locations in Illinois. Location. Average Last Frost Dates. Addison. May 11 - May 20. Algonquin. May 11 - May 20. Alsip. May 1 - May 10.

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