Bonduel, WI 54107 Frost Dates
Frost dates for Bonduel, WI, ZIP 54107
Typically, the last spring freeze lands around 05/09, roughly 254 days out. The first fall frost typically arrives around 10/02, about 144 frost-free days later.
Bonduel 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 Bonduel has about 5 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.
How much risk comes with planting early here
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/26 and you're betting against frost in roughly 9 years out of 10. 05/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bonduel compares
About 144 days separate Bonduel's last and first frost, putting it 36,396 of 40,283 ZIP codes nationally. Within WI, it ranks 670 of 860.
Learn more
zone vs. frost date explains why Zone 5a and Bonduel's frost date answer different questions, and the frost range explains how to read the range around Bonduel's dates instead of trusting one.