Frost Dates for 43758 — Malta, Ohio

Half of springs at Mc Connellsville Lk 7, OH see their last 32°F night by April 27; only one in ten is past it by April 13, and one in ten still has one after May 14. Planting tender crops after May 3 leaves a 30% risk of a frost on them, after May 7 20%, and after May 14 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 24% 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 8 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 May 3, 11 days before the 32°F one. The freeze-free season lasts 176 days in a typical year, shorter than at 66% of the 148 Ohio stations; it reaches 196 days one year in ten and falls short of 154 one year in ten. On average 128 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 9 days longer, to about May 6, and return around October 10. Severe cold of 16°F or below comes every winter, usually between December 5 and March 10.

July is the warmest month at Mc Connellsville Lk 7, OH, averaging 84°F by day and 63°F at night; January is the coldest at 39°F and 20°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 36% of years.

Warmth for growing adds up to 3,213 growing degree days a year (base 50°F), fewer than at 51% of the 148 Ohio stations. 35% of them (1,124) have built up by the end of June, and July adds the most, 718. Precipitation totals 45.0 inches a year, most in July (4.7") and least in February (2.8"); May to September bring 47% of it.

The nearest other station, Philo 3 SW, OH, 15 miles north of Malta and 260 feet higher, has a last frost 8 days earlier (April 19), a first frost 4 days later (October 25), a season 13 days longer.

The first measurable snow (0.1 inch or more) in Malta usually arrives around December 14, and the last of the season around March 13. Those are the middle dates across the winters of 1991–2020 at Mc Connellsville Lk 7, OH, 3.9 miles away: half of years saw snow earlier, half later. Snow fell in 89% of those winters. The last 32°F night of spring typically comes 45 days after the last snow.

ZIP 43758 is 4 miles from Mc Connellsville Lk 7, OH, which stands at 760 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 43756 (Mcconnelsville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 43758 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.