Frost Dates for 46992 — Wabash, Indiana

Half of springs at Wabash, IN 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 9. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 4 20%, and after May 9 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 21 in half of years, as early as October 6 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 11 days later, around November 1; in spring the one-in-ten date for 28°F is April 29, 10 days before the 32°F one. The freeze-free season lasts 181 days in a typical year, shorter than at 50% of the 125 Indiana stations; it reaches 201 days one year in ten and falls short of 159 one year in ten. On average 131 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 May 4, and return around October 11. Severe cold of 16°F or below comes every winter, usually between December 4 and March 11.

July is the warmest month at Wabash, IN, averaging 85°F by day and 64°F at night; January is the coldest at 34°F and 18°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 27% of years.

Warmth for growing adds up to 3,337 growing degree days a year (base 50°F), fewer than at 51% of the 125 Indiana stations. 35% of them (1,175) have built up by the end of June, and July adds the most, 750. Precipitation totals 40.4 inches a year, most in June (4.9") and least in February (2.3"); May to September bring 53% of it.

The nearest other station, N Manchester Wwtp, IN, 14 miles north of Wabash, has a last frost 3 days later (April 26), a first frost 2 days earlier (October 19), a season 7 days shorter.

The first measurable snow (0.1 inch or more) in Wabash usually arrives around December 8, and the last of the season around March 6. Those are the middle dates across the winters of 1991–2020 at Wabash, IN, 0.3 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 48 days after the last snow.

ZIP 46992 is under a mile from Wabash, IN, which stands at 665 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 46970 (Peru). The 2023 USDA Plant Hardiness Zone Map lists ZIP 46992 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.