Frost Dates for 40337 — Jeffersonville, Kentucky

Half of springs at Stanton 2W, KY see their last 32°F night by April 19; only one in ten is past it by April 4, and one in ten still has one after May 5. Planting tender crops after April 25 leaves a 30% risk of a frost on them, after April 30 20%, and after May 5 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 68% of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 20 in half of years, as early as October 10 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 10 days later, around October 30; in spring the one-in-ten date for 28°F is April 23, 12 days before the 32°F one. The freeze-free season lasts 184 days in a typical year, shorter than at 77% of the 113 Kentucky stations; it reaches 203 days one year in ten and falls short of 163 one year in ten. On average 107 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 10 days longer, to about April 29, and return around October 13. Severe cold of 16°F or below comes every winter, usually between December 5 and March 5.

July is the warmest month at Stanton 2W, KY, averaging 84°F by day and 64°F at night; January is the coldest at 42°F and 23°F. A freezing night is all but certain in every month from October 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 17% of years.

Warmth for growing adds up to 3,637 growing degree days a year (base 50°F), fewer than at 84% of the 113 Kentucky stations. 37% of them (1,356) have built up by the end of June, and July adds the most, 756. Precipitation totals 53.2 inches a year, most in May (5.8") and least in November (3.4"); May to September bring 47% of it.

The nearest other station, Mt Sterling, KY, 8 miles northwest of Jeffersonville and 240 feet higher, has a last frost 5 days later (April 24), a first frost 2 days earlier (October 18), a season 9 days shorter.

The first measurable snow (0.1 inch or more) in Jeffersonville usually arrives around December 27, and the last of the season around March 3. Those are the middle dates across the winters of 1991–2020 at Mt Sterling, KY, 8.3 miles away: half of years saw snow earlier, half later. Snow fell in 91% of those winters. The last 32°F night of spring typically comes 47 days after the last snow.

ZIP 40337 is 8 miles from Stanton 2W, KY, which stands at 720 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 40380 (Stanton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 40337 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.