Allouez, WI 54306 Frost Dates
Frost dates for Allouez, WI, ZIP 54306
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/09, about 161 frost-free days later.
The USDA Plant Hardiness Zone Map puts Allouez in Zone 5b (-15 to -10°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 5b around Allouez 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.
The actual range around Allouez's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Allouez compares
About 161 days separate Allouez's last and first frost, putting it 31,990 of 40,283 ZIP codes nationally. Within WI, it ranks 314 of 860.
Learn more
zone vs. frost date explains why Zone 5b and Allouez's frost date answer different questions, and the frost range explains how to read the range around Allouez's dates instead of trusting one.