Frost Dates for 54751 — Menomonie, Wisconsin

Half of springs at Menomonie, WI see their last 32°F night by May 9; only one in ten is past it by April 27, and one in ten still has one after May 24. Planting tender crops after May 16 leaves a 30% risk of a frost on them, after May 19 20%, and after May 24 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 1 in half of years, as early as September 19 one year in ten, and holds off past October 14 one year in ten. A hard freeze of 28°F follows 9 days later, around October 10; in spring the one-in-ten date for 28°F is May 12, 12 days before the 32°F one. The freeze-free season lasts 143 days in a typical year, shorter than at 80% of the 182 Wisconsin stations; it reaches 163 days one year in ten and falls short of 124 one year in ten. On average 163 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 May 21, and return around September 23. Severe cold of 16°F or below comes every winter, usually between November 11 and March 31.

July is the warmest month at Menomonie, WI, averaging 82°F by day and 59°F at night; January is the coldest at 24°F and 5°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 80% of years.

Warmth for growing adds up to 2,395 growing degree days a year (base 50°F), fewer than at 54% of the 182 Wisconsin stations. 33% of them (779) have built up by the end of June, and July adds the most, 638. Precipitation totals 34.0 inches a year, most in June (5.1") and least in January (0.9"); May to September bring 62% of it.

The nearest other station, Durand, WI, 17 miles south of Menomonie, has a last frost 8 days earlier (May 1), a first frost 9 days later (October 10), a season 19 days longer.

The first measurable snow (0.1 inch or more) in Menomonie usually arrives around November 18, and the last of the season around April 1. Those are the middle dates across the winters of 1991–2020 at Menomonie, WI, 0.5 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 38 days after the last snow.

ZIP 54751 is under a mile from Menomonie, WI, which stands at 780 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 54751 in zone 4b, the band where the coldest night of the year averaged -25 to -20°F (-31.7 to -28.9°C) over 1991–2020; a zone describes winter lows, not frost dates.