White Bear Lake, MN 55110 Frost Dates
White Bear Lake, MN: when does the frost end?
Typically, the last spring freeze lands around 04/23, roughly 238 days out. Fall's first freeze usually shows up around 10/20, roughly 177 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts White Bear Lake in Zone 5a (-20 to -15°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 8 weeks until White Bear Lake'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
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
White Bear Lake against the rest of the dataset
About 177 days separate White Bear Lake's last and first frost, putting it 26,043 of 40,283 ZIP codes nationally. Within MN, it ranks 15 of 943.
Learn more
Before leaning on 55110's figures: zone vs. frost date explains why Zone 5a and White Bear Lake's frost date answer different questions, while the frost range explains how to read the range around White Bear Lake's dates instead of trusting one.