Strum, WI 54770 Frost Dates
Frost dates for Strum, WI, ZIP 54770
Typically, the last spring freeze lands around 05/10, roughly 255 days out. The first fall frost typically arrives around 10/02, about 144 frost-free days later.
The USDA Plant Hardiness Zone Map puts Strum 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 Strum 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
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Strum compares
At roughly 144 frost-free days, Strum places 36,404 of 40,283 ZIP codes in this dataset. Within WI, it ranks 672 of 860.
Learn more
zone vs. frost date explains why Zone 4b and Strum's frost date answer different questions, and the frost range explains how to read the range around Strum's dates instead of trusting one.