Moorhead, MN 56560 Frost Dates
When can you plant in Moorhead, MN?
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/03, about 150 frost-free days later.
Moorhead 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
About 5 weeks of growing season left in Moorhead before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Moorhead's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 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 Moorhead compares
Moorhead's growing season runs about 150 days, ranking 35,241 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 512 of 943.
Learn more
the frost range covers how to read the range around Moorhead's dates instead of trusting one. local microclimates covers what one yard in Moorhead can differ from the 56560 normal.