Frost Dates for 43730 — Corning, Ohio

Half of springs at New Lexington 2 NW, OH see their last 32°F night by April 30; only one in ten is past it by April 17, and one in ten still has one after May 16. Planting tender crops after May 6 leaves a 30% risk of a frost on them, after May 11 20%, and after May 16 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 17 in half of years, as early as October 4 one year in ten, and holds off past October 29 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 6, 10 days before the 32°F one. The freeze-free season lasts 168 days in a typical year, shorter than at 85% of the 148 Ohio stations; it reaches 186 days one year in ten and falls short of 149 one year in ten. On average 139 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 10, and return around October 5. Severe cold of 16°F or below comes every winter, usually between November 30 and March 14.

July is the warmest month at New Lexington 2 NW, OH, averaging 83°F by day and 61°F at night; January is the coldest at 37°F and 18°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 46% of years.

Warmth for growing adds up to 2,967 growing degree days a year (base 50°F), fewer than at 81% of the 148 Ohio stations. 35% of them (1,029) have built up by the end of June, and July adds the most, 685. Precipitation totals 44.4 inches a year, most in June (4.9") and least in February (2.7"); May to September bring 46% of it.

The nearest other station, Mc Connellsville Lk 7, OH, 13 miles east of Corning, has a last frost 3 days earlier (April 27), a first frost 4 days later (October 21), a season 8 days longer.

The first measurable snow (0.1 inch or more) in Corning usually arrives around December 9, and the last of the season around March 10. Those are the middle dates across the winters of 1991–2020 at New Lexington 2 NW, OH, 10.3 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 51 days after the last snow.

ZIP 43730 is 10 miles from New Lexington 2 NW, OH, which stands at 877 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station; its figures are presented in full for 43764 (New Lexington). The 2023 USDA Plant Hardiness Zone Map lists ZIP 43730 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.