Minot, ND 58701 Frost Dates
Frost dates for Minot, ND, ZIP 58701
Typically, the last spring freeze lands around 05/13, roughly 258 days out. The first fall frost typically arrives around 09/27, about 136 frost-free days later.
Minot 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 Minot has about 4 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 Minot's last frost
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Minot compares
About 136 days separate Minot's last and first frost, putting it 37,622 of 40,283 ZIP codes nationally. Within ND, it ranks 221 of 405.
Learn more
zone vs. frost date explains why Zone 4a and Minot's frost date answer different questions, and the frost range explains how to read the range around Minot's dates instead of trusting one.