Hettinger, ND 57640 Frost Dates
When can you plant in Hettinger, ND?
Typically, the last spring freeze lands around 05/30, roughly 275 days out. The first fall frost typically arrives around 09/11, about 103 frost-free days later.
Zone 4b (-25 to -20°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 Hettinger, not a forecast for this year.
What to do before the first frost
About 2 weeks of growing season left in Hettinger before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hettinger's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Plant by 05/18 and you're betting against frost in roughly 9 years out of 10. 06/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hettinger compares
At roughly 103 frost-free days, Hettinger places 39,623 of 40,283 ZIP codes in this dataset. Within ND, it ranks 404 of 405.
Learn more
the frost range covers how to read the range around Hettinger's dates instead of trusting one. local microclimates covers what one yard in Hettinger can differ from the 57640 normal.