Frost Dates for 46994 — Walton, Indiana

Half of springs at Young America, IN see their last 32°F night by April 25; only one in ten is past it by April 11, and one in ten still has one after May 11. Planting tender crops after May 1 leaves a 30% risk of a frost on them, after May 5 20%, and after May 11 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 35% of the 125 Indiana stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 17 in half of years, as early as October 1 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 11 days later, around October 28; in spring the one-in-ten date for 28°F is May 1, 10 days before the 32°F one. The freeze-free season lasts 174 days in a typical year, shorter than at 72% of the 125 Indiana stations; it reaches 194 days one year in ten and falls short of 151 one year in ten. On average 130 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 May 5, and return around October 4. Severe cold of 16°F or below comes every winter, usually between December 3 and March 12.

July is the warmest month at Young America, IN, averaging 83°F by day and 62°F at night; January is the coldest at 32°F and 17°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 30% of years.

Warmth for growing adds up to 3,063 growing degree days a year (base 50°F), fewer than at 79% of the 125 Indiana stations. 36% of them (1,101) have built up by the end of June, and July adds the most, 691. Precipitation totals 41.1 inches a year, most in June (5.2") and least in February (2.3"); May to September bring 53% of it.

The nearest other station, Logansport Cicott St, IN, 9 miles northwest of Walton and 173 feet lower, has a last frost 5 days earlier (April 20), a first frost 6 days later (October 23), a season 11 days longer.

The first measurable snow (0.1 inch or more) in Walton usually arrives around December 2, and the last of the season around March 22. Those are the middle dates across the winters of 1991–2020 at Young America, IN, 8.9 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 34 days after the last snow.

ZIP 46994 is 9 miles from Young America, IN, which stands at 773 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 46929 (Flora). The 2023 USDA Plant Hardiness Zone Map lists ZIP 46994 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.