Frost Dates for 45692 — Wellston, Ohio

Half of springs at Jackson 3 NW, OH see their last 32°F night by April 22; only one in ten is past it by April 7, and one in ten still has one after May 11. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 6 20%, and after May 11 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 92% 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 9 one year in ten, and holds off past November 1 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, 15 days before the 32°F one. The freeze-free season lasts 181 days in a typical year, longer than at 53% of the 148 Ohio stations; it reaches 201 days one year in ten and falls short of 159 one year in ten. On average 118 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 12 days longer, to about May 4, and return around October 12. Severe cold of 16°F or below comes every winter, usually between December 6 and March 6.

July is the warmest month at Jackson 3 NW, OH, averaging 82°F by day and 62°F at night; January is the coldest at 37°F and 21°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 30% of years.

Warmth for growing adds up to 3,055 growing degree days a year (base 50°F), fewer than at 72% of the 148 Ohio stations. 36% of them (1,108) have built up by the end of June, and July adds the most, 680. Precipitation totals 45.2 inches a year, most in July (4.7") and least in November (2.9"); May to September bring 46% of it.

The nearest other station, Carpenter 2 S, OH, 18 miles east of Wellston, has a last frost 5 days later (April 27), a first frost 7 days earlier (October 14), a season 13 days shorter.

The first measurable snow (0.1 inch or more) in Wellston usually arrives around December 1, and the last of the season around March 14. Those are the middle dates across the winters of 1991–2020 at Jackson 3 NW, OH, 8.9 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 39 days after the last snow.

ZIP 45692 is 9 miles from Jackson 3 NW, OH, which stands at 845 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 45640 (Jackson). The 2023 USDA Plant Hardiness Zone Map lists ZIP 45692 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.