Belle Plaine, MN 56011 Frost Dates
Frost dates for Belle Plaine, MN, ZIP 56011
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/05, about 153 frost-free days later.
The USDA Plant Hardiness Zone Map puts Belle Plaine in Zone 4b (-25 to -20°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 4b around Belle Plaine 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
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Belle Plaine compares
About 153 days separate Belle Plaine's last and first frost, putting it 34,519 of 40,283 ZIP codes nationally. Within MN, it ranks 406 of 943.
Learn more
zone vs. frost date explains why Zone 4b and Belle Plaine's frost date answer different questions, and the frost range explains how to read the range around Belle Plaine's dates instead of trusting one.