Clintonville, WI 54929 Frost Dates
Frost dates for Clintonville, WI, ZIP 54929
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/06, about 154 frost-free days later.
Clintonville sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 5a around Clintonville has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clintonville compares
At roughly 154 frost-free days, Clintonville places 34,272 of 40,283 ZIP codes in this dataset. Within WI, it ranks 477 of 860.
Learn more
the frost range explains how to read the range around Clintonville's dates instead of trusting one, and local microclimates explains what one yard in Clintonville can differ from the 54929 normal.