Anamoose, ND 58710 Frost Dates
Frost dates for Anamoose, ND, ZIP 58710
Typically, the last spring freeze lands around 05/12, roughly 257 days out. The first fall frost typically arrives around 09/27, about 137 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 Anamoose, not a forecast for this year.
What to do before the first frost
Zone 4a around Anamoose 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 Anamoose's last frost
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Anamoose compares
At roughly 137 frost-free days, Anamoose places 37,588 of 40,283 ZIP codes in this dataset. Within ND, it ranks 215 of 405.
Learn more
zone vs. frost date explains why Zone 4a and Anamoose's frost date answer different questions, and the frost range explains how to read the range around Anamoose's dates instead of trusting one.