Frost Dates for 47586 — Tell City, Indiana

Half of springs at Tell City, IN see their last 32°F night by April 5; only one in ten is past it by March 20, and one in ten still has one after April 23. Planting tender crops after April 11 leaves a 30% risk of a frost on them, after April 16 20%, and after April 23 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 84% of the 125 Indiana stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 18 one year in ten, and holds off past November 18 one year in ten. A hard freeze of 28°F follows 12 days later, around November 13; in spring the one-in-ten date for 28°F is April 9, 14 days before the 32°F one. The freeze-free season lasts 208 days in a typical year, longer than at 94% of the 125 Indiana stations; it reaches 231 days one year in ten and falls short of 186 one year in ten. On average 77 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 19, and return around October 23. Severe cold of 16°F or below comes in 98% of winters, usually between December 25 and February 15.

July is the warmest month at Tell City, IN, averaging 85°F by day and 67°F at night; January is the coldest at 41°F and 26°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 65% of years.

Warmth for growing adds up to 3,947 growing degree days a year (base 50°F), more than at 83% of the 125 Indiana stations. 37% of them (1,442) have built up by the end of June, and July adds the most, 815. Precipitation totals 51.2 inches a year, most in May (5.8") and least in August (3.0"); May to September bring 42% of it.

The nearest other station, Cannelton, IN, 5 miles south of Tell City, has a last frost 3 days earlier (April 2), a first frost 6 days later (November 7), a season 10 days longer.

The first measurable snow (0.1 inch or more) in Tell City 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, 5.3 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 51 days after the last snow.

ZIP 47586 is 2 miles from Tell City, IN, which stands at 390 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 47586 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.