Calumet, MN 55716 Frost Dates
When can you plant in Calumet, MN?
The last spring frost here typically falls around 05/17, about 262 days from today. The first fall frost typically arrives around 09/24, about 130 frost-free days later.
The USDA Plant Hardiness Zone Map puts Calumet in Zone 4a (-30 to -25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 4 weeks of growing season left in Calumet before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Calumet's last frost
05/17 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 05/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Calumet compares
Calumet's growing season runs about 130 days, ranking 38,409 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 854 of 943.
Learn more
zone vs. frost date covers why Zone 4a and Calumet's frost date answer different questions. the frost range covers how to read the range around Calumet's dates instead of trusting one.