Frost Dates for 44109 — Cleveland, Ohio

Half of springs at Cleveland Burke Airport, OH see their last 32°F night by April 8; only one in ten is past it by March 29, and one in ten still has one after April 20. Planting tender crops after April 14 leaves a 30% risk of a frost on them, after April 17 20%, and after April 20 10%. The 12 days between the even-odds date and the one-in-ten date is the narrowest of the 148 Ohio stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 12 in half of years, as early as November 1 one year in ten, and holds off past November 28 one year in ten. A hard freeze of 28°F follows 10 days later, around November 22; in spring the one-in-ten date for 28°F is April 13, 7 days before the 32°F one. The freeze-free season lasts 217 days in a typical year, the longest of the 148 Ohio stations; it reaches 236 days one year in ten and falls short of 200 one year in ten. On average 92 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 12 days longer, to about April 20, and return around November 3. Severe cold of 16°F or below comes every winter, usually between December 25 and February 28.

July is the warmest month at Cleveland Burke Airport, OH, averaging 81°F by day and 68°F at night; January is the coldest at 35°F and 24°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 84% of years.

Warmth for growing adds up to 3,326 growing degree days a year (base 50°F), more than at 61% of the 148 Ohio stations. 32% of them (1,073) have built up by the end of June, and July adds the most, 753. Precipitation totals 33.3 inches a year, most in July (3.7") and least in February (1.5"); May to September bring 49% of it.

The nearest other station, Cleveland, OH, 8 miles west of Cleveland and 179 feet higher, has a last frost 12 days later (April 20), a first frost 9 days earlier (November 3), a season 19 days shorter.

The first measurable snow (0.1 inch or more) in Cleveland usually arrives around November 10, and the last of the season around April 9. Those are the middle dates across the winters of 1991–2020 at Cleveland, OH, 8.5 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 1 day before the last snow.

ZIP 44109 is 5 miles from Cleveland Burke Airport, OH, which stands at 584 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 27 other ZIP codes share the station; its figures are presented in full for 44118 (Cleveland Heights). The 2023 USDA Plant Hardiness Zone Map lists ZIP 44109 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.