Welcome, MN 56181 Frost Dates
Frost dates for Welcome, MN, ZIP 56181
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/14, about 171 frost-free days later.
Welcome sits in USDA Zone 5a (-20 to -15°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 5a around Welcome has about 7 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 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Welcome compares
Welcome's growing season runs about 171 days, ranking 28,762 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 78 of 943.
Learn more
zone vs. frost date explains why Zone 5a and Welcome's frost date answer different questions, and the frost range explains how to read the range around Welcome's dates instead of trusting one.