Lake Nebagamon, WI 54820 Frost Dates
Lake Nebagamon, WI: when does the frost end?
Typically, the last spring freeze lands around 05/24, roughly 269 days out. Fall's first freeze usually shows up around 09/26, roughly 124 days after the last spring frost.
Lake Nebagamon sits in USDA Zone 4a (-30 to -25°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 4 weeks until Lake Nebagamon's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lake Nebagamon's last frost
05/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
Lake Nebagamon against the rest of the dataset
About 124 days separate Lake Nebagamon's last and first frost, putting it 38,848 of 40,283 ZIP codes nationally. Within WI, it ranks 829 of 860.
Learn more
Before leaning on 54820's figures: zone vs. frost date explains why Zone 4a and Lake Nebagamon's frost date answer different questions, while the frost range explains how to read the range around Lake Nebagamon's dates instead of trusting one.