Frost Dates for 40008 — Bloomfield, Kentucky

Half of springs at Taylorsville Lake, KY see their last 32°F night by April 23; only one in ten is past it by April 8, and one in ten still has one after May 7. Planting tender crops after April 28 leaves a 30% risk of a frost on them, after May 2 20%, and after May 7 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 93% of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 16 in half of years, as early as October 4 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 9 days later, around October 25; in spring the one-in-ten date for 28°F is April 28, 9 days before the 32°F one. The freeze-free season lasts 176 days in a typical year, shorter than at 90% of the 113 Kentucky stations; it reaches 198 days one year in ten and falls short of 155 one year in ten. On average 109 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 9 days longer, to about May 2, and return around October 8. Severe cold of 16°F or below comes every winter, usually between December 5 and March 1.

July is the warmest month at Taylorsville Lake, KY, averaging 90°F by day and 64°F at night; January is the coldest at 43°F and 22°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 4,053 growing degree days a year (base 50°F), more than at 55% of the 113 Kentucky stations. 37% of them (1,505) have built up by the end of June, and July adds the most, 841.

The nearest other station, Bardstown 5E, KY, 9 miles southwest of Bloomfield, has a last frost 10 days earlier (April 13), a first frost 9 days later (October 25), a season 19 days longer.

The first measurable snow (0.1 inch or more) in Bloomfield usually arrives around December 28, and the last of the season around February 25. Those are the middle dates across the winters of 1991–2020 at Bardstown 5E, KY, 9.1 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 57 days after the last snow.

ZIP 40008 is 6 miles from Taylorsville Lake, KY, which stands at 700 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 40071 (Taylorsville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 40008 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.