Last frost date milwaukee

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.

Last frost date milwaukee. 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.

Dates on this chart are approximations, no one can KNOW the weather, every season is different. Most years, the first and last frost will fall within two weeks of the date on the chart, but some years, we get a very early frost or …

Climate Plots For Milwaukee and Madison. Current Month. Year To Date. Water Year: Oct-Sep. Local Climate Information for Milwaukee and Madison. Daily: Milwaukee Mitchell International Airport Issued: 04/30/2024 04:21:23 PM CDT. Daily: Madison - Dane County Regional Airport Issued: 04/30/2024 04:21:24 PM CDT.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. You have a small 20% chance of getting 32° by October 12. There is a 50% chance of being hit by a 32° frost starting around October 23. You have a 80% chance of seeing 32° by November 4. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall. View snow climatology for Milwaukee, Wisconsin. Milwaukee averages 48.7 inches of snow per year, based on the 1991-2020 climate normals. Notable records for Milwaukee include: Record one-day snowfall: 17.9 inches (March 3, 1881) Record monthly snowfall: 52.6 inches (January 1918 and March 1881) Record seasonal snowfall: 109.8 inches (1885-1886)Climate Plots For Milwaukee and Madison. Current Month. Year To Date. Water Year: Oct-Sep. Local Climate Information for Milwaukee and Madison. Daily: Milwaukee Mitchell International Airport Issued: 04/30/2024 04:21:23 PM CDT. Daily: Madison - Dane County Regional Airport Issued: 04/30/2024 04:21:24 PM CDT.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.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.

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.The average date of last frost is April 15 in Milwaukee. In the coldest months of winter you can expect an average low temperature of -15°F . It's important to remember that USDA zone info for Milwaukee is an average and the actual date of last frost changes from year to year.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.Dec 11, 2020 · Here are the average last frost dates, average first frost dates, average days in the growing season, and USDA zone for several cities in the United States, Canada, and other parts of the world. United States. State and city Last frost First frost Days Zone. Alabama. Birmingham March 19 November 14 241 7B. 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.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. Enter your location below and we will tell you when your average first frost and last frost dates are likely to happen. You can enter a zipcode or a location like City, State. Data is provided by the NOAA National Centers for Environmental Information .

The first frost date is the earliest date in the year that frost is expected to occur, while the last frost date is the latest date that frost is expected. These dates can vary greatly depending on the location and climate, with some areas experiencing frost as early as September and as late as May. In the UK, the average first frost date is ...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. Severe freeze: 24°F (-4.4°C) and …1. Access the National Gardening Association Calculator. Input your zip code or city location in the calculator to get your first and last frost dates. Your last frost date is the approximate day when your area will stop experiencing temperatures below 32°F in the spring.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.Enter your zip code or postal code above. The 2024 gardening calendar tells you the ideal times WHEN TO PLANT vegetables, fruit, and herbs in your area. The chart lists: While you don't have to plant the very first …

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You have a small 20% chance of getting 32° by October 1. There is a 50% chance of being hit by a 32° frost starting around October 13. 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.Date of First Frost. Analyzing our gridded temperature dataset, we can map the day of first frost,defined as the first day after July 1 where the minimum temperature is below 32 F. (See our day-of-year calendar .) The first map shows the median DOY of first frost; for each map location, half the years were earlier than this date, half later ... 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.

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.Last Spring Frost Date - when to expect the start of the gardening season in Spring; Jump to a section to dig in: Frost Dates By USDA Growing Zone; ... no frost: no frost: Milwaukee, WI: October 25: April 22: Minneapolis, MN: October 13: April 23: Mobile, AL: December 12: February 26: Nashville, TN: November 7: April 6: Newark, NJ: November 8: 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. 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. 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. Jun. 1 - Jun. 10. Zone 12. Jun. 11 - Jun. 20. Zone 13. Jun. 21 - Jun. 30. + -. Leaflet | ©Plantmaps ©OpenStreetMap Contributors. Plantmaps has derived zones indicating the Interactive map of average annual Last frost dates for the province of Ontario. Enter your location below and we will tell you when your average first frost and last frost dates are likely to happen. You can enter a zipcode or a location like City, State. Data is provided by the NOAA National Centers for Environmental Information . Enter your ZIP or Postal code in the field above to see frost dates for your location (based on the nearest weather station), as well as the length of your growing season based on frost dates. Last and first frost dates are 30% probability. Calculated using 1991-2020 …

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See the average first and last frost dates for locations across the U.S. and Canada with our frost dates calculator. Simply enter your postal code to see when the last spring frost date and first fall frost date typically occur in your area. Knowing local frost dates can improve your gardening by giving you an idea of when to start seeds indoors and outdoors, when …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.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. 1. 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 ... Jun. 1 - Jun. 10. Zone 12. Jun. 11 - Jun. 20. Zone 13. Jun. 21 - Jun. 30. + -. Leaflet | ©Plantmaps ©OpenStreetMap Contributors. Plantmaps has derived zones indicating the Interactive map of average annual Last frost dates for the province of Ontario.Climate Plots For Milwaukee and Madison. Current Month. Year To Date. Water Year: Oct-Sep. Local Climate Information for Milwaukee and Madison. Daily: Milwaukee Mitchell International Airport Issued: 04/30/2024 04:21:23 PM CDT. Daily: Madison - Dane County Regional Airport Issued: 04/30/2024 04:21:24 PM CDT.Daisies, delphinium, and dianthus should be started 10 to 12 weeks ahead and can be planted out 1 to 2 weeks before the frost-free date. Asclepias, foxglove, heliopsis, and phlox take 10 to 12 weeks but need to wait until after the last frost to be transplanted. Zinnias are fast-growing annuals that can be started indoors or seeded directly in ...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.

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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.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.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. List of Average Last Frost Dates for Locations in Wisconsin. Location. Average Last Frost Dates. Appleton. Jun. 1 - Jun. 10. Ashwaubenon. May 21 - May 31. Beaver Dam. May 21 - May 31. If you’ve ever tried your hand at baking, you know that a delicious buttercream frosting can take your cakes, cupcakes, and cookies to the next level. But for beginners, the though... LATE PLANTING - With an average first frost date of October 7. th. August 1st is the last date for plantingseeds of: • Beets • Bush Beans • Carrot • Chinese cabbage • Cucumber • Kohlrabi • Peas • Turnips . August 1st is the last date for planting transplants of: • Broccoli • Chinese Cabbage • Cauliflower • Cabbage These dates can vary year by year, usually within about a two-week window. City, State. First Fall Frost Date. Last Spring Frost Date. Atlanta, GA. November 18. March 17.A light frost is when temperatures are between 29°–32°F. During a light frost, tender plants may be killed, with little destructive effect on hardier vegetation. The probability of a frost occurring after the spring date or before the fall frost date listed below is 30%, which means that a frost could occur before or after the dates listed. ….

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 ... Enter your location below and we will tell you when your average first frost and last frost dates are likely to happen. You can enter a zipcode or a location like City, State. Data is provided by the NOAA National Centers for Environmental Information . First Fall Freeze Dates Map. At the very top toggle between First Fall Freeze and Last Spring Freeze. Hover over a colored dot for more details. Map and Chart Prepared by Corey Davis, Applied Climatologist, State Climate Office of North Carolina, and Darrian Bertrand, Applied Climatologist, formerly of the State Climate Office.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.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. 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. 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.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.Our frost date calculator will tell you precisely when your garden in Milwaukee Mitchell, WI is at risk for frost.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. Last frost date milwaukee, Planting Guides for Wisconsin. This is your list of cities in Wisconsin. Wisconsin has a range of climates spanning from as cold as Zone 4a to as warm as Zone 5b. If the city you are looking for is not in this list you can view the zone map for Wisconsin to get a good idea of the zones in your area, and then click on one of the zone links below., See the average first and last frost dates for locations across the U.S. and Canada with our frost dates calculator. Simply enter your postal code to see when the last spring frost …, 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., 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. Severe freeze: 24°F (-4.4°C) and …, See the average first and last frost dates for locations across the U.S. and Canada with our frost dates calculator. Simply enter your postal code to see when the last spring frost date and first fall frost date typically occur in your area. Knowing local frost dates can improve your gardening by giving you an idea of when to start seeds indoors and outdoors, when …, 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. Severe freeze: 24°F (-4.4°C) and …, 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., 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. , 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., Dates are given based upon when a 50% chance that the first or last frost of the year has occurred. If you want to be conservative or take a risk then add or subtract an extra two weeks to the date of the first or last frosts. Flower in the frost by Gabriel Anast. Note: Early = 1st to 10th of the month. Mid = 11th to 20th of the month., See the average first and last frost dates for locations across the U.S. and Canada with our frost dates calculator. Simply enter your postal code to see when the last spring frost date and first fall frost date typically occur in your area. Knowing local frost dates can improve your gardening by giving you an idea of when to start seeds indoors and …, Date of First Frost. Analyzing our gridded temperature dataset, we can map the day of first frost,defined as the first day after July 1 where the minimum temperature is below 32 F. (See our day-of-year calendar .) The first map shows the median DOY of first frost; for each map location, half the years were earlier than this date, half later ..., Last Spring Frost Date - when to expect the start of the gardening season in Spring; Jump to a section to dig in: Frost Dates By USDA Growing Zone; ... no frost: no frost: Milwaukee, WI: October 25: April 22: Minneapolis, MN: October 13: April 23: Mobile, AL: December 12: February 26: Nashville, TN: November 7: April 6: Newark, NJ: November 8:, 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. , Dates are given based upon when a 50% chance that the first or last frost of the year has occurred. If you want to be conservative or take a risk then add or subtract an extra two weeks to the date of the first or last frosts. Flower in the frost by Gabriel Anast. Note: Early = 1st to 10th of the month. Mid = 11th to 20th of the month., 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., If you’ve ever tried your hand at baking, you know that a delicious buttercream frosting can take your cakes, cupcakes, and cookies to the next level. But for beginners, the though..., Your last frost date is the approximate day when your area will stop experiencing temperatures below 32°F in the spring. To find it, you only need to type in …, A light frost is when temperatures are between 29°–32°F. During a light frost, tender plants may be killed, with little destructive effect on hardier vegetation. The probability of a frost occurring after the spring date or before the fall frost date listed below is 30%, which means that a frost could occur before or after the dates listed., The publication also has a handy tool to find the average date of the last frost by city and state, right down to the ZIP code. In Milwaukee, that’s usually around April 25. In Milwaukee, that ..., 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., Mar 23, 2023 · In Milwaukee, the final day of frost tends to be around April 25 . Bear in mind, this isn’t a fail-safe date. It’s based on historical climate data from the National Oceanic and Atmospheric ... , Plant Maps data shows both as having estimated last frosts in early June. In the Lake District, it's late May (21st-31st). Generally speaking, last frosts get later as you go further north but there is a lot of variety so it is always worth checking local forecasts. Dennis Barnes // Getty Images., 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., 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., 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., In addition, these three vegetables are warm-weather crops that can be planted indoors 8 to 10 weeks before your last frost date. Eggplant needs daytime temps of 65F to 95F and if the temp dips below that they will not produce fruit. Leek needs a long growing season. Plant early for a summer harvest and again in the fall for overwintering., 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., France Interactive Average Last Frost Date Map. France Interactive Average Last Frost Date Map. Plant Maps. Home (current) About; Home; France Last Frost Date Map; France Average Last Frost Date Map. Zone 1 Frost Rare: Zone 2 Jan. 21 - Jan. 31: Zone 3 Feb. 1 - Feb. 10: Zone 4 Feb. 11 - Feb. 20: Zone 5 Feb. 21 - Feb. 29: Zone 6 Mar. 1 - …, Cream cheese frosting is a beloved accompaniment to many baked goods, from carrot cake to cinnamon rolls. Its smooth and tangy flavor adds a delightful contrast to the sweetness of..., Jun. 1 - Jun. 10. Zone 12. Jun. 11 - Jun. 20. Zone 13. Jun. 21 - Jun. 30. + -. Leaflet | ©Plantmaps ©OpenStreetMap Contributors. Plantmaps has derived zones indicating the Interactive map of average annual Last frost dates for the province of Ontario., 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., 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.