Frost Dates for 43964 — Toronto, Ohio

Half of springs at New Cumberland L/D, WV see their last 32°F night by April 22; only one in ten is past it by April 11, and one in ten still has one after May 8. Planting tender crops after April 28 leaves a 30% risk of a frost on them, after May 1 20%, and after May 8 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 28 in half of years, as early as October 13 one year in ten, and holds off past November 10 one year in ten. A hard freeze of 28°F follows 9 days later, around November 6; in spring the one-in-ten date for 28°F is April 21, 17 days before the 32°F one. The freeze-free season lasts 186 days in a typical year, longer than at 71% of the 148 Ohio stations; it reaches 204 days one year in ten and falls short of 166 one year in ten. On average 112 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 2, and return around October 17. Severe cold of 16°F or below comes every winter, usually between December 14 and March 11.

July is the warmest month at New Cumberland L/D, WV, averaging 84°F by day and 63°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 21% of years.

Warmth for growing adds up to 3,185 growing degree days a year (base 50°F), fewer than at 57% of the 148 Ohio stations. 34% of them (1,070) have built up by the end of June, and July adds the most, 727.

The nearest other station, Steubenville, OH, 6 miles south of Toronto and 317 feet higher, has a last frost 7 days later (April 29), a first frost 8 days earlier (October 20), a season 11 days shorter.

The first measurable snow (0.1 inch or more) in Toronto usually arrives around December 15, and the last of the season around March 3. Those are the middle dates across the winters of 1991–2020 at New Cumberland L/D, WV, 4.2 miles away: half of years saw snow earlier, half later. Snow fell in 78% of those winters. The last 32°F night of spring typically comes 50 days after the last snow.

ZIP 43964 is 4 miles from New Cumberland L/D, WV, which stands at 675 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station; its figures are presented in full for 43920 (East Liverpool). The 2023 USDA Plant Hardiness Zone Map lists ZIP 43964 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.