Sheyenne, ND 58374 Frost Dates
When can you plant in Sheyenne, ND?
The last spring frost here typically falls around 05/12, about 257 days from today. The first fall frost typically arrives around 09/29, about 138 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 Sheyenne, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Sheyenne before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/12 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. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sheyenne compares
Sheyenne's growing season runs about 138 days, ranking 37,464 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 196 of 405.
Learn more
local microclimates covers what one yard in Sheyenne can differ from the 58374 normal. zone vs. frost date covers why Zone 4a and Sheyenne's frost date answer different questions.