McGregor, MN 55760 Frost Dates
When can you plant in McGregor, MN?
Typically, the last spring freeze lands around 05/07, roughly 252 days out. The first fall frost typically arrives around 10/03, about 148 frost-free days later.
Zone 4a (-30 to -25°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 McGregor, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in McGregor before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around McGregor's last frost
05/07 is the middle of 30 years of NOAA records, not a promise. Plant by 04/26 and you're betting against frost in roughly 9 years out of 10. 05/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McGregor compares
About 148 days separate McGregor's last and first frost, putting it 35,789 of 40,283 ZIP codes nationally. Within MN, it ranks 593 of 943.
Learn more
the frost range covers how to read the range around McGregor's dates instead of trusting one. local microclimates covers what one yard in McGregor can differ from the 55760 normal.