Frost Dates for 44902 — Mansfield, Ohio

Half of springs at Mansfield Lahm Municipal Airport, OH see their last 32°F night by April 26; only one in ten is past it by April 14, and one in ten still has one after May 12. Planting tender crops after May 2 leaves a 30% risk of a frost on them, after May 6 20%, and after May 12 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 148 Ohio stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 22 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 2; in spring the one-in-ten date for 28°F is May 2, 10 days before the 32°F one. The freeze-free season lasts 177 days in a typical year, shorter than at 61% of the 148 Ohio stations; it reaches 198 days one year in ten and falls short of 158 one year in ten. On average 124 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 9. Severe cold of 16°F or below comes every winter, usually between December 4 and March 15.

July is the warmest month at Mansfield Lahm Municipal Airport, OH, averaging 83°F by day and 62°F at night; January is the coldest at 34°F and 19°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 34% of years.

Warmth for growing adds up to 3,047 growing degree days a year (base 50°F), fewer than at 74% of the 148 Ohio stations. 35% of them (1,058) have built up by the end of June, and July adds the most, 699. Precipitation totals 42.6 inches a year, most in June (4.8") and least in February (2.5"); May to September bring 47% of it.

The nearest other station, Mansfield 5 W, OH, 6 miles west of Mansfield, has a last frost 4 days later (April 30), a first frost 7 days earlier (October 15), a season 10 days shorter.

The first measurable snow (0.1 inch or more) in Mansfield usually arrives around November 14, and the last of the season around April 7. Those are the middle dates across the winters of 1991–2020 at Mansfield Lahm Municipal Airport, OH, 4.2 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 19 days after the last snow.

ZIP 44902 is 4 miles from Mansfield Lahm Municipal Airport, OH, which stands at 1,295 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 6 other ZIP codes share the station; its figures are presented in full for 44903 (Mansfield). The 2023 USDA Plant Hardiness Zone Map lists ZIP 44902 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.