When is the last frost in pa

Oct 5. Oct 8. Oct 10. Oct 13. Oct 17. Oct 21. Now that you know your frost dates, use our Garden Planting Calendar for Allentown, PA to know when to sow and transplant your various vegetable plants! Frost Dates for other nearby locations. Beltzville Dam, PA.

Nov 8. Nov 11. Nov 15. Nov 21. Now that you know your frost dates, use our Garden Planting Calendar for Aston, Pennsylvania to know when to sow and transplant your various vegetable plants! Frost Dates for other nearby locations. Philadelphia, PA. West Chester, PA. Wilmington New Castle Co Ap, DE.Oct 10. Oct 13. Oct 15. Oct 17. Oct 20. Oct 22. Oct 26. Now that you know your frost dates, use our Garden Planting Calendar for Erie, Pennsylvania to know when to sow and transplant your various vegetable 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. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Sep 15. Sep 19. Sep 23. Sep 27. Oct 1. Oct 4. Oct 9. Oct 15. Now that you know your frost dates, use our Garden Planting Calendar for Renovo, PA to know when to sow and transplant your various vegetable 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.Sep 29. Oct 2. Oct 5. Oct 10. Now that you know your frost dates, use our Garden Planting Calendar for Indiana, PA to know when to sow and transplant your various vegetable plants!Sep 29. Oct 3. Oct 5. Oct 8. Oct 11. Oct 13. Oct 17. Oct 21. Now that you know your frost dates, use our Garden Planting Calendar for Newville, Pennsylvania to know when to sow and transplant your various vegetable plants!

Temperature ranges of Plant Hardiness and Gardening Zones ; 5b, -15 to -10 F · -23.4 to -26.1 C · Columbia, Missouri; Mansfield, Pennsylvania ; 6a, -10 to -5 F &middo...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 colder—heavy ...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 13. You have a 80% chance of seeing 32° by October 21. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.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.First Fall Frost. Growing Season. DOYLESTOWN AP, PA. 393'. Apr 19. Oct 24. 187 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA.

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.As your growing season comes to an end, the nightly temperatures for Waynesburg, PA start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 27, and by October 16 you're almost certain to have received at least one frost event.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.“MD PA” is an acronym. The most common meaning for this acronym is medical doctor, professional association. A professional association is an unincorporated business that is formed...May 27. May 23. May 19. May 14. May 9. May 2. How to read these charts for the fall. As your growing season comes to an end, the nightly temperatures for Seward, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 27, and by October 21 ...Sep 24. Sep 26. Sep 29. Oct 1. Oct 3. Oct 6. Oct 8. Oct 12. Now that you know your frost dates, use our Garden Planting Calendar for Wyoming, Pennsylvania to know when to sow and transplant your various vegetable plants!

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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 frost in spring or the first frost in fall or winter. Frost occurs when air temperatures reach freezing: 32° Fahrenheit (0° Centigrade). However, a frost can occur even when air temperatures are just above freezing. Frost can damage young and newly planted plants, the new growth on …21 Apr 2024 ... Frost advisories are issued from May to October (but can be extended if necessary) when temperatures, winds, and sky cover are favorable for ...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.Sep 24. Sep 27. Sep 30. Oct 3. Oct 6. Oct 10. Oct 15. Now that you know your frost dates, use our Garden Planting Calendar for Allegheny, Pennsylvania to know when to sow and transplant your various vegetable 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.

November 6/March 28. Portland Downtown. November 27/February 24. Troutdale. November 8/March 28. Wilsonville. October 30/April 18. Statistics used to formulate first and last frost dates are drawn from weather data collected from 1981-2010. All data is collected at low elevations.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 to 2 weeks after last frost. Peppers. 8 to 10 weeks before last frost. 1 to 2 weeks after last frost. Cucumbers. 2 to 4 weeks before last frost. 1 to 2 weeks after last frost. Using these guidelines, your vegetables will have a head start, thriving in Pennsylvania’s growing season.Click the dots to see the average date on which the chance of freezing temperatures drops below 50 percent across the United States, based on the U.S. Climate Normals from 1991–2020. (Launch the map in its own window.)Places where that date occurs near the official start of spring are colored white. Places where the last freezing …Mar 15, 2023 · In southeastern Pennsylvania, that appears to be between April 3 and April 17 this year. Communities closer to Pittsburgh will see their last spring frost occur closer to April 30,...In the Spring. As your growing season comes to an end, the nightly temperatures for Northumberland, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around October 1, and by October 25 you're almost certain to have received at least one frost event.Find the average first and last frost date in spring and fall in your area by entering your ZIP code, city, or state. Learn how to use frost dates to plan your garden and protect your plants from freezing temperatures.Planting Guides for Pennsylvania. This is your list of cities in Pennsylvania. Pennsylvania has a range of climates spanning from as cold as Zone 5a to as warm as Zone 7b. If the city you are looking for is not in this list you can view the zone map for Pennsylvania to get a good idea of the zones in your area, and then click on one of the zone ...As your growing season comes to an end, the nightly temperatures for Kane, PA start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around August 27, and by September 22 you're almost certain to have received at least one frost event.The storms are expected to bring wind gusts of up to 40 mph and marble-sized hail (0.5 inches). "At 6:18 p.m., Doppler radar tracked a cluster of strong thunderstorms …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.Weather Weather sub-navigation. 5-Day Forecast; Long-Range Forecast; SUMMER Forecast 2024; Frost Dates; Weather History; Gardening Gardening sub-navigation. Garden Planner; Planting Dates Chart; Robin's Garden Blog

Frost Lines by State 2024. Each state's frost depth is displayed as an average. For example, frost depths in Illinois range from approximately 20" in the south to more than 50" along the northern border, which results in an average of 36" …

Sep 24. Sep 27. Sep 29. Oct 2. Oct 4. Oct 7. Oct 10. Oct 14. Now that you know your frost dates, use our Garden Planting Calendar for Schuylkill Haven, Pennsylvania to know when to sow and transplant your various vegetable plants!Map and charts for the last average dates for killing frost in the United States, zone temperature ranges and temperature conversion table. The Garden Helper Basics. Gardening for Beginners. ... Missouri; Mansfield, Pennsylvania 6a -10 to -5 F -20.6 to -23.3 C St. Louis, Missouri; Lebanon, Pennsylvania 6b -5 to 0 FSep 1. Sep 4. Sep 7. Sep 10. Sep 13. Sep 16. Sep 20. Sep 25. Now that you know your frost dates, use our Garden Planting Calendar for Waymart, Pennsylvania to know when to sow and transplant your various vegetable plants!Mar 15, 2023 · In southeastern Pennsylvania, that appears to be between April 3 and April 17 this year. Communities closer to Pittsburgh will see their last spring frost occur closer to April 30,...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.When it comes to finding a reliable and trustworthy dealership in Langhorne, PA, look no further than Reedman Chevrolet. One of the key reasons why Reedman Chevrolet stands out is ...When to plant outdoors: 1-2 weeks before last frost~ Harvesting characteristics: when heads are firm and glossy; Onions. Indoor growing time prior to transplanting: 9 to 11 weeks; ... *** In Pennsylvania the last frost is typically between May 1 and 25. ~Direct seed about the same time you transplant for fall harvests. Sources.List of Average Last Frost Dates for Locations in Pennsylvania. Location. Average Last Frost Dates. Allentown. May 11 - May 20. Allison Park. May 1 - May 10. Allison Park. May 1 - May 10.

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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.The days in between equal the length of your frost-free growing season. For example, in the illustration above, the town of Adel has a 50% probability of a freeze happening on June 6 and September 17. That means the average last frost is June 6 and the average first frost is September 17, giving me an approximate 102-day growing …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.Communities closer to Pittsburgh will see their last spring frost occur closer to April 30, according to the Almanac. Pennsylvania is in 5, 6 and 7 USDA plant hardiness zones, with southern ...Sep 29. Oct 2. Oct 5. Oct 8. Oct 10. Oct 13. Oct 17. Oct 21. Now that you know your frost dates, use our Garden Planting Calendar for Coopersburg, Pennsylvania to know when to sow and transplant your various vegetable plants!Find out when the first and last frost dates are likely to happen in your location by entering your zipcode or city and state. Data is provided by the NOAA National Centers for Environmental Information. ….

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.Planting Guides for Erie. According to the USDA Erie is in USDA Zone 6b. Here is some general info for USDA Zone 6b to help you get started. Average Date of Last Frost (spring) April 15. Average Date of First Frost (fall) October 15. Lowest Expected Low. -5°F.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.As your growing season comes to an end, the nightly temperatures for Franklin, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around October 5, and by October 25 you're almost certain to have received at least one frost event.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.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 to transplant, and when to ...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 to transplant, and when to ...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. When is the last frost in pa, Jun. 1 - Jun. 10. Zone 16. Jun. 11 - Jun. 20. Zone 17. Jun. 21 - Jun. 30. Plantmaps has derived zones indicating the average annual Last frost dates for United Kingdom., As your growing season comes to an end, the nightly temperatures for Hellertown, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around October 2, and by October 29 you're almost certain to have received at least one frost event., 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., Sep 24. Sep 26. Sep 29. Oct 1. Oct 3. Oct 6. Oct 8. Oct 12. Now that you know your frost dates, use our Garden Planting Calendar for Wyoming, Pennsylvania to know when to sow and transplant your various vegetable 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..., 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., As your growing season comes to an end, the nightly temperatures for Harrisburg, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 30, and by October 21 you're almost certain to have received at least one frost event., 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 colder—heavy ..., 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., Buttercream frosting does not need to be refrigerated if used within two to three days. However, it keeps for up to two weeks if stored in the refrigerator in an airtight container..., But you'll have to be patient if you're looking to plant tomatoes, peppers and cucumbers. Those are the plants that shouldn't go into the ground until at least the middle of May. According to the weather service, the latest frost on record in Allentown took place May 30, 1949. The latest freeze on record took place May 21, 2002., May 27. May 23. May 19. May 14. May 9. May 2. How to read these charts for the fall. As your growing season comes to an end, the nightly temperatures for Seward, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 27, and by October 21 ..., 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., As a cool-season vegetable, carrots are best planted in the very early spring and fall—they will not thrive during hot weather. The right planting time is about 2-4 weeks before your last frost date. Ahead, we dive into the exact planting times for carrots based on growing zone, plus some additional tips to have a bountiful harvest., If you’re in the market for a new or used vehicle, then look no further than Turner Kia’s showroom in Harrisburg, PA. With a wide selection of vehicles and exceptional customer ser..., This user-friendly web application leverages the power of geolocation to provide precise and localized frost date predictions for users in the United States and Canada, a crucial factor for successful planting and harvesting. By accessing historical data from nearby weather stations, our tool accurately forecasts the probability of the last and ..., Map and charts for the last average dates for killing frost in the United States, zone temperature ranges and temperature conversion table. The Garden Helper Basics. Gardening for Beginners. ... Missouri; Mansfield, Pennsylvania 6a -10 to -5 F -20.6 to -23.3 C St. Louis, Missouri; Lebanon, Pennsylvania 6b -5 to 0 F, You have a small 20% chance of getting 32° by October 8. There is a 50% chance of being hit by a 32° frost starting around October 18. You have a 80% chance of seeing 32° by October 29. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., 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., You have a small 20% chance of getting 32° by September 26. There is a 50% chance of being hit by a 32° frost starting around October 8. You have a 80% chance of seeing 32° by October 20. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., 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., , Published March 21, 2022. Highlights. This map shows the average date past which the chances that the temperature will remain above freezing for the rest of the season are …, If you’re in the market for a new or used vehicle, then look no further than Turner Kia’s showroom in Harrisburg, PA. With a wide selection of vehicles and exceptional customer ser..., When it comes to finding a reliable and trustworthy dealership in Langhorne, PA, look no further than Reedman Chevrolet. One of the key reasons why Reedman Chevrolet stands out is ..., First Fall Frost. Growing Season. DOYLESTOWN AP, PA. 393'. Apr 19. Oct 24. 187 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA., 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., There is a 50% chance of being hit by a 32° frost starting around September 22. You have a 80% chance of seeing 32° by October 1. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall. Temperature., As your growing season comes to an end, the nightly temperatures for Montrose, Pennsylvania start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 15, and by October 9 you're almost certain to have received at least one frost event.