Frost Dates for 47512 — Bicknell, Indiana

Half of springs at Freelandville, IN see their last 32°F night by April 9; only one in ten is past it by March 25, and one in ten still has one after April 24. Planting tender crops after April 16 leaves a 30% risk of a frost on them, after April 20 20%, and after April 24 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 70% of the 125 Indiana stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 30 in half of years, as early as October 17 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 9 days later, around November 8; in spring the one-in-ten date for 28°F is April 14, 10 days before the 32°F one. The freeze-free season lasts 202 days in a typical year, longer than at 90% of the 125 Indiana stations; it reaches 220 days one year in ten and falls short of 181 one year in ten. On average 102 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 11 days longer, to about April 20, and return around October 20. Severe cold of 16°F or below comes every winter, usually between December 9 and February 28.

July is the warmest month at Freelandville, IN, averaging 86°F by day and 67°F at night; January is the coldest at 37°F and 22°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 78% of years.

Warmth for growing adds up to 3,849 growing degree days a year (base 50°F), more than at 77% of the 125 Indiana stations. 37% of them (1,423) have built up by the end of June, and July adds the most, 812. Precipitation totals 45.4 inches a year, most in May (5.5") and least in February (2.5"); May to September bring 46% of it.

The nearest other station, Vincennes 5 NE, IN, 10 miles west of Bicknell, has a last frost 2 days later (April 11), a first frost 4 days earlier (October 26), a season 5 days shorter.

The first measurable snow (0.1 inch or more) in Bicknell usually arrives around December 12, and the last of the season around March 1. Those are the middle dates across the winters of 1991–2020 at Freelandville, IN, 6.2 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 39 days after the last snow.

ZIP 47512 is 6 miles from Freelandville, IN, which stands at 550 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 47512 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.