Frost Dates for 46962 — North Manchester, Indiana

Half of springs at N Manchester Wwtp, IN see their last 32°F night by April 26; only one in ten is past it by April 12, 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 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 19 in half of years, as early as October 5 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 10 days later, around October 29; in spring the one-in-ten date for 28°F is April 29, 12 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 193 days one year in ten and falls short of 153 one year in ten. On average 134 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 6, and return around October 7. Severe cold of 16°F or below comes every winter, usually between December 1 and March 12.

July is the warmest month at N Manchester Wwtp, IN, averaging 83°F by day and 62°F at night; January is the coldest at 33°F and 17°F. A freezing night is all but certain in every month from October 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 32% of years.

Warmth for growing adds up to 3,013 growing degree days a year (base 50°F), fewer than at 90% of the 125 Indiana stations. 35% of them (1,062) have built up by the end of June, and July adds the most, 702. Precipitation totals 41.3 inches a year, most in June (4.8") and least in February (2.0"); May to September bring 52% of it.

The nearest other station, Wabash, IN, 14 miles south of North Manchester, has a last frost 3 days earlier (April 23), a first frost 2 days later (October 21), a season 7 days longer.

The first measurable snow (0.1 inch or more) in North Manchester usually arrives around November 23, and the last of the season around March 21. Those are the middle dates across the winters of 1991–2020 at Warsaw 5SW, IN, 14.2 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 36 days after the last snow.

ZIP 46962 is under a mile from N Manchester Wwtp, IN, which stands at 760 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 46962 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.