Frost Dates for 53144 — Kenosha, Wisconsin

Half of springs at Kenosha Regional Airport, WI see their last 32°F night by April 28; only one in ten is past it by April 13, and one in ten still has one after May 13. Planting tender crops after May 3 leaves a 30% risk of a frost on them, after May 7 20%, and after May 13 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 30% of the 182 Wisconsin stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 19 in half of years, as early as October 1 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 11 days later, around October 30; in spring the one-in-ten date for 28°F is May 2, 11 days before the 32°F one. The freeze-free season lasts 174 days in a typical year, longer than at 88% of the 182 Wisconsin stations; it reaches 194 days one year in ten and falls short of 153 one year in ten. On average 135 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 8, and return around October 7. Severe cold of 16°F or below comes every winter, usually between November 29 and March 12.

July is the warmest month at Kenosha Regional Airport, WI, averaging 84°F by day and 62°F at night; January is the coldest at 31°F and 16°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 38% of years.

Warmth for growing adds up to 2,862 growing degree days a year (base 50°F), more than at 95% of the 182 Wisconsin stations. 31% of them (898) have built up by the end of June, and July adds the most, 705. Precipitation totals 32.0 inches a year, most in June (3.7") and least in February (1.1"); May to September bring 55% of it.

The nearest other station, Kenosha, WI, 4 miles southeast of Kenosha, has a last frost 9 days earlier (April 19), a first frost 7 days later (October 26), a season 15 days longer.

The first measurable snow (0.1 inch or more) in Kenosha usually arrives around December 2, and the last of the season around March 23. Those are the middle dates across the winters of 1991–2020 at Kenosha, WI, 4.2 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 36 days after the last snow.

ZIP 53144 is 3 miles from Kenosha Regional Airport, WI, which stands at 743 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 53144 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.