Frost Dates for 40111 — Cloverport, Kentucky

Half of springs at Cannelton, IN see their last 32°F night by April 2; only one in ten is past it by March 16, and one in ten still has one after April 20. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 14 20%, and after April 20 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 54% of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 7 in half of years, as early as October 28 one year in ten, and holds off past November 25 one year in ten. A hard freeze of 28°F follows 10 days later, around November 17; in spring the one-in-ten date for 28°F is April 8, 12 days before the 32°F one. The freeze-free season lasts 218 days in a typical year, longer than at 96% of the 113 Kentucky stations; it reaches 240 days one year in ten and falls short of 197 one year in ten. On average 76 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 14 days longer, to about April 16, and return around October 30. Severe cold of 16°F or below comes in 99% of winters, usually between December 25 and February 11.

July is the warmest month at Cannelton, IN, averaging 87°F by day and 69°F at night; January is the coldest at 42°F and 27°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 55% of years.

Warmth for growing adds up to 4,329 growing degree days a year (base 50°F), more than at 77% of the 113 Kentucky stations. 36% of them (1,576) have built up by the end of June, and July adds the most, 865. Precipitation totals 48.9 inches a year, most in May (5.5") and least in August (2.8"); May to September bring 42% of it.

The nearest other station, Tell City, IN, 12 miles northwest of Cloverport, has a last frost 3 days later (April 5), a first frost 6 days earlier (November 1), a season 10 days shorter.

The first measurable snow (0.1 inch or more) in Cloverport usually arrives around December 26, and the last of the season around February 13. Those are the middle dates across the winters of 1991–2020 at Cannelton, IN, 7 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 48 days after the last snow.

ZIP 40111 is 7 miles from Cannelton, IN, which stands at 402 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 42366 (Philpot). The 2023 USDA Plant Hardiness Zone Map lists ZIP 40111 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.