Souris, ND 58783 Frost Dates
When can you plant in Souris, ND?
The last spring frost here typically falls around 05/14, about 259 days from today. The first fall frost typically arrives around 09/25, about 133 frost-free days later.
The USDA Plant Hardiness Zone Map puts Souris in Zone 3b (-35 to -30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 4 weeks of growing season left in Souris before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 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 Souris compares
About 133 days separate Souris's last and first frost, putting it 38,154 of 40,283 ZIP codes nationally. Within ND, it ranks 295 of 405.
Learn more
local microclimates covers what one yard in Souris can differ from the 58783 normal. zone vs. frost date covers why Zone 3b and Souris's frost date answer different questions.