Ellendale, ND 58436 Frost Dates
Frost dates for Ellendale, ND, ZIP 58436
Around 05/09 is the usual last spring frost, about 254 days away. The first fall frost typically arrives around 09/28, about 141 frost-free days later.
Ellendale sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 4b around Ellendale 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.
The actual range around Ellendale's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ellendale compares
Ellendale's growing season runs about 141 days, ranking 36,925 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 117 of 405.
Learn more
local microclimates explains what one yard in Ellendale can differ from the 58436 normal, and zone vs. frost date explains why Zone 4b and Ellendale's frost date answer different questions.