Frost Dates for 45144 — Manchester, Ohio

Half of springs at Maysville Wwtp, KY see their last 32°F night by April 18; only one in ten is past it by April 3, and one in ten still has one after May 4. Planting tender crops after April 24 leaves a 30% risk of a frost on them, after April 29 20%, and after May 4 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 30 in half of years, as early as October 17 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 9 days later, around November 8; in spring the one-in-ten date for 28°F is April 22, 12 days before the 32°F one. The freeze-free season lasts 195 days in a typical year, longer than at 92% of the 148 Ohio stations; it reaches 212 days one year in ten and falls short of 175 one year in ten. On average 107 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 11 days longer, to about April 29, and return around October 19. Severe cold of 16°F or below comes every winter, usually between December 13 and March 1.

July is the warmest month at Maysville Wwtp, KY, averaging 87°F by day and 65°F at night; January is the coldest at 41°F and 23°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 16% of years.

Warmth for growing adds up to 3,760 growing degree days a year (base 50°F), more than at 93% of the 148 Ohio stations. 35% of them (1,316) have built up by the end of June, and July adds the most, 804. Precipitation totals 48.4 inches a year, most in May (5.1") and least in November (3.2"); May to September bring 44% of it.

The nearest other station, Ripley Exp Farm, OH, 12 miles northwest of Manchester and 365 feet higher, has a last frost 11 days later (April 29), a first frost 19 days earlier (October 11), a season 33 days shorter.

The first measurable snow (0.1 inch or more) in Manchester usually arrives around December 4, and the last of the season around March 13. Those are the middle dates across the winters of 1991–2020 at Ripley Exp Farm, OH, 11.7 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 36 days after the last snow.

ZIP 45144 is 9 miles from Maysville Wwtp, KY, which stands at 515 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 41056 (Maysville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 45144 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.