Frost Dates for 45769 — Pomeroy, Ohio

Half of springs at Carpenter 2 S, OH see their last 32°F night by April 27; only one in ten is past it by April 11, and one in ten still has one after May 15. Planting tender crops after May 4 leaves a 30% risk of a frost on them, after May 9 20%, and after May 15 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 76% of the 148 Ohio stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 14 in half of years, as early as October 2 one year in ten, and holds off past October 28 one year in ten. A hard freeze of 28°F follows 12 days later, around October 26; in spring the one-in-ten date for 28°F is May 3, 12 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 188 days one year in ten and falls short of 147 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 7, and return around October 5. Severe cold of 16°F or below comes every winter, usually between December 2 and March 9.

July is the warmest month at Carpenter 2 S, OH, averaging 85°F by day and 62°F at night; January is the coldest at 40°F and 22°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 38% of years.

Warmth for growing adds up to 3,306 growing degree days a year (base 50°F), more than at 60% of the 148 Ohio stations. 36% of them (1,200) have built up by the end of June, and July adds the most, 715. Precipitation totals 43.2 inches a year, most in June (4.5") and least in November (2.8"); May to September bring 46% of it.

The nearest other station, Athens Ou, OH, 16 miles north of Pomeroy, has a last frost 2 days earlier (April 25), a first frost 9 days later (October 23), a season 11 days longer.

The first measurable snow (0.1 inch or more) in Pomeroy usually arrives around December 20, and the last of the season around March 14. Those are the middle dates across the winters of 1991–2020 at Carpenter 2 S, OH, 10.9 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 44 days after the last snow.

ZIP 45769 is 11 miles from Carpenter 2 S, OH, which stands at 822 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 45769 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.