Frost Dates for 44039 — North Ridgeville, Ohio

Half of springs at Elyria 3 E, OH see their last 32°F night by April 22; only one in ten is past it by April 6, and one in ten still has one after May 7. Planting tender crops after April 28 leaves a 30% risk of a frost on them, after May 1 20%, and after May 7 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 77% of the 148 Ohio stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 17 one year in ten, and holds off past November 12 one year in ten. A hard freeze of 28°F follows 9 days later, around November 10; in spring the one-in-ten date for 28°F is April 24, 13 days before the 32°F one. The freeze-free season lasts 192 days in a typical year, longer than at 86% of the 148 Ohio stations; it reaches 213 days one year in ten and falls short of 171 one year in ten. On average 115 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 18. Severe cold of 16°F or below comes every winter, usually between December 15 and March 8.

July is the warmest month at Elyria 3 E, OH, averaging 85°F by day and 65°F at night; January is the coldest at 36°F and 22°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 3,420 growing degree days a year (base 50°F), more than at 72% of the 148 Ohio stations. 35% of them (1,185) have built up by the end of June, and July adds the most, 769. Precipitation totals 41.9 inches a year, most in July (4.1") and least in February (2.4"); May to September bring 48% of it.

The nearest other station, Cleveland, OH, 8 miles east of North Ridgeville, has a last frost 2 days earlier (April 20), a first frost 2 days later (November 3), a season 6 days longer.

The first measurable snow (0.1 inch or more) in North Ridgeville usually arrives around November 18, and the last of the season around April 6. Those are the middle dates across the winters of 1991–2020 at Elyria 3 E, OH, 2.7 miles away: half of years saw snow earlier, half later. Snow fell in 86% of those winters. The last 32°F night of spring typically comes 16 days after the last snow.

ZIP 44039 is 3 miles from Elyria 3 E, OH, which stands at 730 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 6 other ZIP codes share the station; its figures are presented in full for 44035 (Elyria). The 2023 USDA Plant Hardiness Zone Map lists ZIP 44039 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.