Long Lake, MN 55356 Frost Dates
Long Lake, MN: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/09, roughly 160 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Long Lake in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 6 weeks until Long Lake's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Long Lake's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Long Lake against the rest of the dataset
About 160 days separate Long Lake's last and first frost, putting it 32,392 of 40,283 ZIP codes nationally. Within MN, it ranks 223 of 943.
Learn more
Before leaning on 55356's figures: zone vs. frost date explains why Zone 4b and Long Lake's frost date answer different questions, while the frost range explains how to read the range around Long Lake's dates instead of trusting one.