Freeborn, MN 56032 Frost Dates
Frost dates for Freeborn, MN, ZIP 56032
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/06, about 158 frost-free days later.
Zone 5a (-20 to -15°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 Freeborn, not a forecast for this year.
What to do before the first frost
Zone 5a around Freeborn 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.
How much risk comes with planting early here
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. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Freeborn compares
About 158 days separate Freeborn's last and first frost, putting it 33,139 of 40,283 ZIP codes nationally. Within MN, it ranks 295 of 943.
Learn more
the frost range explains how to read the range around Freeborn's dates instead of trusting one, and local microclimates explains what one yard in Freeborn can differ from the 56032 normal.