Frost Dates for 53015 — Cleveland, Wisconsin

Half of springs at Sheboygan Co Mem Airport, WI 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 13 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 wider than at 70% of the 182 Wisconsin stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 8 in half of years, as early as September 26 one year in ten, and holds off past October 23 one year in ten. A hard freeze of 28°F follows 13 days later, around October 21; 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 154 days in a typical year, shorter than at 53% of the 182 Wisconsin stations; it reaches 173 days one year in ten and falls short of 132 one year in ten. On average 151 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 14 days longer, to about May 19, and return around September 29. Severe cold of 16°F or below comes every winter, usually between November 23 and March 21.

July is the warmest month at Sheboygan Co Mem Airport, WI, averaging 80°F by day and 58°F at night; January is the coldest at 27°F and 12°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 65% of years.

Warmth for growing adds up to 2,210 growing degree days a year (base 50°F), fewer than at 75% of the 182 Wisconsin stations. 29% of them (650) have built up by the end of June, and July adds the most, 597. Precipitation totals 29.7 inches a year, most in June (3.8") and least in February (1.0"); May to September bring 55% of it.

The nearest other station, Sheboygan, WI, 12 miles south of Cleveland, has a last frost 10 days earlier (April 25), a first frost 15 days later (October 23), a season 25 days longer.

The first measurable snow (0.1 inch or more) in Cleveland usually arrives around November 22, and the last of the season around April 8. Those are the middle dates across the winters of 1991–2020 at Sheboygan, WI, 11.6 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 27 days after the last snow.

ZIP 53015 is 11 miles from Sheboygan Co Mem Airport, WI, which stands at 746 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 53085 (Sheboygan Falls). The 2023 USDA Plant Hardiness Zone Map lists ZIP 53015 in zone 5b, the band where the coldest night of the year averaged -15 to -10°F (-26.1 to -23.3°C) over 1991–2020; a zone describes winter lows, not frost dates.