Glenfield, ND 58443 Frost Dates
Frost dates for Glenfield, ND, ZIP 58443
The last spring frost here typically falls around 05/12, about 257 days from today. The first fall frost typically arrives around 09/28, about 139 frost-free days later.
The USDA Plant Hardiness Zone Map puts Glenfield in Zone 4a (-30 to -25°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
Zone 4a around Glenfield 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.
How much risk comes with planting early here
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 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 Glenfield compares
About 139 days separate Glenfield's last and first frost, putting it 37,301 of 40,283 ZIP codes nationally. Within ND, it ranks 159 of 405.
Learn more
local microclimates explains what one yard in Glenfield can differ from the 58443 normal, and zone vs. frost date explains why Zone 4a and Glenfield's frost date answer different questions.