Frost Dates for 43532 — Liberty Center, Ohio

Half of springs at Napoleon, OH see their last 32°F night by April 24; only one in ten is past it by April 13, and one in ten still has one after May 7. Planting tender crops after April 29 leaves a 30% risk of a frost on them, after May 2 20%, and after May 7 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 97% of the 148 Ohio 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 5 one year in ten, and holds off past November 3 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 26, 11 days before the 32°F one. The freeze-free season lasts 179 days in a typical year, shorter than at 51% of the 148 Ohio stations; it reaches 197 days one year in ten and falls short of 161 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 8 days longer, to about May 2, and return around October 9. Severe cold of 16°F or below comes every winter, usually between December 4 and March 15.

July is the warmest month at Napoleon, OH, averaging 84°F by day and 63°F at night; January is the coldest at 33°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 24% of years.

Warmth for growing adds up to 3,090 growing degree days a year (base 50°F), fewer than at 69% of the 148 Ohio stations. 34% of them (1,063) have built up by the end of June, and July adds the most, 728. Precipitation totals 37.4 inches a year, most in May (4.0") and least in February (2.3"); May to September bring 49% of it.

The nearest other station, Wauseon Wtp, OH, 10 miles northwest of Liberty Center, has a last frost 5 days later (April 29), a first frost 5 days earlier (October 16), a season 9 days shorter.

The first measurable snow (0.1 inch or more) in Liberty Center usually arrives around December 5, and the last of the season around March 17. Those are the middle dates across the winters of 1991–2020 at Napoleon, OH, 8.2 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 38 days after the last snow.

ZIP 43532 is 8 miles from Napoleon, OH, which stands at 682 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 43545 (Napoleon). The 2023 USDA Plant Hardiness Zone Map lists ZIP 43532 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.