Walker, MN 56484 Frost Dates
Frost dates for Walker, MN, ZIP 56484
Typically, the last spring freeze lands around 05/04, roughly 249 days out. The first fall frost typically arrives around 10/07, about 155 frost-free days later.
Walker sits in USDA Zone 4a (-30 to -25°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 4a around Walker has about 6 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 Walker's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Walker compares
About 155 days separate Walker's last and first frost, putting it 34,044 of 40,283 ZIP codes nationally. Within MN, it ranks 360 of 943.
Learn more
the frost range explains how to read the range around Walker's dates instead of trusting one, and local microclimates explains what one yard in Walker can differ from the 56484 normal.