Allouez, WI 54307 Frost Dates
Allouez, WI: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/09, roughly 161 days after the last spring frost.
Allouez sits in USDA Zone 5b (-15 to -10°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.
Stretching the season past the first frost
With roughly 6 weeks until Allouez's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Allouez against the rest of the dataset
About 161 days separate Allouez's last and first frost, putting it 31,991 of 40,283 ZIP codes nationally. Within WI, it ranks 315 of 860.
Learn more
Before leaning on 54307's figures: zone vs. frost date explains why Zone 5b and Allouez's frost date answer different questions, while the frost range explains how to read the range around Allouez's dates instead of trusting one.