Frost Dates for 44814 — Berlin Heights, Ohio

Half of springs at Norwalk Wwtp, OH see their last 32°F night by April 25; only one in ten is past it by April 11, and one in ten still has one after May 9. Planting tender crops after May 1 leaves a 30% risk of a frost on them, after May 4 20%, and after May 9 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 93% of the 148 Ohio stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 25 in half of years, as early as October 11 one year in ten, and holds off past November 7 one year in ten. A hard freeze of 28°F follows 11 days later, around November 5; in spring the one-in-ten date for 28°F is April 28, 11 days before the 32°F one. The freeze-free season lasts 183 days in a typical year, longer than at 59% of the 148 Ohio stations; it reaches 202 days one year in ten and falls short of 163 one year in ten. On average 124 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 4, and return around October 13. Severe cold of 16°F or below comes every winter, usually between December 9 and March 13.

July is the warmest month at Norwalk Wwtp, OH, averaging 83°F by day and 64°F at night; January is the coldest at 33°F and 19°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 33% of years.

Warmth for growing adds up to 3,097 growing degree days a year (base 50°F), fewer than at 68% of the 148 Ohio stations. 34% of them (1,046) have built up by the end of June, and July adds the most, 722. Precipitation totals 40.1 inches a year, most in June (4.3") and least in February (2.3"); May to September bring 49% of it.

The nearest other station, Oberlin, OH, 13 miles east of Berlin Heights, has a last frost 2 days later (April 27), a first frost 3 days earlier (October 22), a season 5 days shorter.

The first measurable snow (0.1 inch or more) in Berlin Heights usually arrives around November 25, and the last of the season around March 27. Those are the middle dates across the winters of 1991–2020 at Norwalk Wwtp, OH, 8.6 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 29 days after the last snow.

ZIP 44814 is 9 miles from Norwalk Wwtp, OH, which stands at 670 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 44857 (Norwalk). The 2023 USDA Plant Hardiness Zone Map lists ZIP 44814 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.