Minneapolis, MN 55409 Frost Dates
Minneapolis, MN: when does the frost end?
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/18, roughly 176 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Minneapolis 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 7 weeks until Minneapolis's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 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.
Minneapolis against the rest of the dataset
At roughly 176 frost-free days, Minneapolis places 26,318 of 40,283 ZIP codes in this dataset. Within MN, it ranks 24 of 943.
Learn more
Before leaning on 55409's figures: zone vs. frost date explains why Zone 5a and Minneapolis's frost date answer different questions, while the frost range explains how to read the range around Minneapolis's dates instead of trusting one.