Sturgeon Lake, MN 55783 Frost Dates
Frost dates for Sturgeon Lake, MN, ZIP 55783
Typically, the last spring freeze lands around 05/12, roughly 257 days out. The first fall frost typically arrives around 10/02, about 144 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sturgeon Lake 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
Zone 4a around Sturgeon Lake has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Sturgeon Lake's last frost
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sturgeon Lake compares
About 144 days separate Sturgeon Lake's last and first frost, putting it 36,441 of 40,283 ZIP codes nationally. Within MN, it ranks 664 of 943.
Learn more
the frost range explains how to read the range around Sturgeon Lake's dates instead of trusting one, and local microclimates explains what one yard in Sturgeon Lake can differ from the 55783 normal.