Blooming Prairie, MN 55917 Frost Dates
When can you plant in Blooming Prairie, MN?
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/06, about 154 frost-free days later.
Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Blooming Prairie, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Blooming Prairie before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 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 Blooming Prairie compares
About 154 days separate Blooming Prairie's last and first frost, putting it 34,337 of 40,283 ZIP codes nationally. Within MN, it ranks 391 of 943.
Learn more
the frost range covers how to read the range around Blooming Prairie's dates instead of trusting one. local microclimates covers what one yard in Blooming Prairie can differ from the 55917 normal.