Frost Dates for 41141 — Garrison, Kentucky

Half of springs at Warnock 2, KY see their last 32°F night by April 20; only one in ten is past it by April 5, and one in ten still has one after May 10. Planting tender crops after April 27 leaves a 30% risk of a frost on them, after May 3 20%, and after May 10 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 88% of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 22 in half of years, as early as October 10 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 10 days later, around November 1; in spring the one-in-ten date for 28°F is April 24, 16 days before the 32°F one. The freeze-free season lasts 182 days in a typical year, shorter than at 80% of the 113 Kentucky stations; it reaches 202 days one year in ten and falls short of 160 one year in ten. On average 119 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about May 2, and return around October 13. Severe cold of 16°F or below comes every winter, usually between December 9 and March 1.

July is the warmest month at Warnock 2, KY, averaging 86°F by day and 63°F at night; January is the coldest at 42°F and 24°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 24% of years.

Warmth for growing adds up to 3,596 growing degree days a year (base 50°F), fewer than at 86% of the 113 Kentucky stations. 37% of them (1,316) have built up by the end of June, and July adds the most, 753. Precipitation totals 48.2 inches a year, most in July (5.3") and least in November (2.9"); May to September bring 46% of it.

The nearest other station, Olive Hill 5NE, KY, 16 miles south of Garrison, has a last frost 4 days later (April 24), a first frost 4 days earlier (October 18), a season 8 days shorter.

The first measurable snow (0.1 inch or more) in Garrison usually arrives around December 4, and the last of the season around March 4. Those are the middle dates across the winters of 1991–2020 at Olive Hill 5NE, KY, 15.9 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 47 days after the last snow.

ZIP 41141 is 9 miles from Warnock 2, KY, which stands at 910 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 41144 (Greenup). The 2023 USDA Plant Hardiness Zone Map lists ZIP 41141 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.