Erhard, MN 56534 Frost Dates
Frost dates for Erhard, MN, ZIP 56534
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/03, about 149 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 Erhard, not a forecast for this year.
What to do before the first frost
Zone 4a around Erhard 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.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Erhard compares
About 149 days separate Erhard's last and first frost, putting it 35,591 of 40,283 ZIP codes nationally. Within MN, it ranks 572 of 943.
Learn more
zone vs. frost date explains why Zone 4a and Erhard's frost date answer different questions, and the frost range explains how to read the range around Erhard's dates instead of trusting one.