Boyceville, WI 54725 Frost Dates
Boyceville, WI: when does the frost end?
Typically, the last spring freeze lands around 05/10, roughly 255 days out. Fall's first freeze usually shows up around 09/29, roughly 140 days after the last spring frost.
Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Boyceville, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Boyceville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Boyceville's last frost
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
Boyceville against the rest of the dataset
About 140 days separate Boyceville's last and first frost, putting it 37,076 of 40,283 ZIP codes nationally. Within WI, it ranks 715 of 860.
Learn more
Before leaning on 54725's figures: zone vs. frost date explains why Zone 4b and Boyceville's frost date answer different questions, while the frost range explains how to read the range around Boyceville's dates instead of trusting one.