Algoma, WI 54201 Frost Dates
Algoma, WI: when does the frost end?
Around 05/06 is the usual last spring frost, about 251 days away. Fall's first freeze usually shows up around 10/17, roughly 163 days after the last spring frost.
Algoma 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 7 weeks until Algoma's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Algoma against the rest of the dataset
Algoma's growing season runs about 163 days, ranking 31,391 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 231 of 860.
Learn more
Before leaning on 54201's figures: zone vs. frost date explains why Zone 5b and Algoma's frost date answer different questions, while the frost range explains how to read the range around Algoma's dates instead of trusting one.