Bloomer, WI 54724 Frost Dates
Frost dates for Bloomer, WI, ZIP 54724
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/03, about 151 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bloomer in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 4b around Bloomer 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.
The actual range around Bloomer's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 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 Bloomer compares
At roughly 151 frost-free days, Bloomer places 35,020 of 40,283 ZIP codes in this dataset. Within WI, it ranks 534 of 860.
Learn more
zone vs. frost date explains why Zone 4b and Bloomer's frost date answer different questions, and the frost range explains how to read the range around Bloomer's dates instead of trusting one.