Blomkest, MN 56216 Frost Dates
Frost dates for Blomkest, MN, ZIP 56216
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/07, about 159 frost-free days later.
Blomkest 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 Blomkest has about 6 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 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Blomkest compares
At roughly 159 frost-free days, Blomkest places 32,794 of 40,283 ZIP codes in this dataset. Within MN, it ranks 278 of 943.
Learn more
zone vs. frost date explains why Zone 4b and Blomkest's frost date answer different questions, and the frost range explains how to read the range around Blomkest's dates instead of trusting one.