Sheldon, ND 58068 Frost Dates
Frost dates for Sheldon, ND, ZIP 58068
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/05, about 155 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 Sheldon, not a forecast for this year.
What to do before the first frost
Zone 4a around Sheldon has about 5 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.
Why 05/03 isn't a guarantee
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sheldon compares
About 155 days separate Sheldon's last and first frost, putting it 34,184 of 40,283 ZIP codes nationally. Within ND, it ranks 22 of 405.
Learn more
the frost range explains how to read the range around Sheldon's dates instead of trusting one, and local microclimates explains what one yard in Sheldon can differ from the 58068 normal.