Plummer, MN 56748 Frost Dates
Plummer, MN: when does the frost end?
Around 05/09 is the usual last spring frost, about 254 days away. Fall's first freeze usually shows up around 09/30, roughly 142 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Plummer in Zone 3b (-35 to -30°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 5 weeks until Plummer's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Plummer's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/24 and only about 1 year in 10 sees frost after that.
Plummer against the rest of the dataset
At roughly 142 frost-free days, Plummer places 36,820 of 40,283 ZIP codes in this dataset. Within MN, it ranks 697 of 943.
Learn more
Before leaning on 56748's figures: the frost range explains how to read the range around Plummer's dates instead of trusting one, while local microclimates explains what one yard in Plummer can differ from the 56748 normal.