Frost Dates for 44023 — Chagrin Falls, Ohio

Half of springs at Chardon, OH see their last 32°F night by May 5; only one in ten is past it by April 22, and one in ten still has one after May 21. Planting tender crops after May 12 leaves a 30% risk of a frost on them, after May 17 20%, and after May 21 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 18 in half of years, as early as October 2 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 14 days later, around November 1; in spring the one-in-ten date for 28°F is May 9, 12 days before the 32°F one. The freeze-free season lasts 164 days in a typical year, shorter than at 93% of the 148 Ohio stations; it reaches 185 days one year in ten and falls short of 142 one year in ten. On average 142 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 13 days longer, to about May 18, and return around October 5. Severe cold of 16°F or below comes every winter, usually between December 3 and March 22.

July is the warmest month at Chardon, OH, averaging 81°F by day and 59°F at night; January is the coldest at 33°F and 17°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 63% of years.

Warmth for growing adds up to 2,535 growing degree days a year (base 50°F), fewer than at 99% of the 148 Ohio stations. 33% of them (839) have built up by the end of June, and July adds the most, 622. Precipitation totals 50.7 inches a year, most in July (4.7") and least in February (3.1"); May to September bring 44% of it.

The nearest other station, Kirtland-Holden 2, OH, 16 miles north of Chagrin Falls, has a last frost 9 days earlier (April 26), a first frost 13 days later (October 31), a season 20 days longer.

The first measurable snow (0.1 inch or more) in Chagrin Falls usually arrives around November 10, and the last of the season around April 4. Those are the middle dates across the winters of 1991–2020 at Chardon, OH, 15.2 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 31 days after the last snow.

ZIP 44023 is 15 miles from Chardon, OH, which stands at 1,130 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station; its figures are presented in full for 44024 (Chardon). The 2023 USDA Plant Hardiness Zone Map lists ZIP 44023 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.