Wolf Lake, MN 56570 Frost Dates
Frost dates for Wolf Lake, MN, ZIP 56570
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/03, about 150 frost-free days later.
Wolf Lake sits in USDA Zone 3b (-35 to -30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 3b around Wolf 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.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wolf Lake compares
At roughly 150 frost-free days, Wolf Lake places 35,460 of 40,283 ZIP codes in this dataset. Within MN, it ranks 555 of 943.
Learn more
local microclimates explains what one yard in Wolf Lake can differ from the 56570 normal, and zone vs. frost date explains why Zone 3b and Wolf Lake's frost date answer different questions.