Browerville, MN 56438 Frost Dates
Frost dates for Browerville, MN, ZIP 56438
The last spring frost here typically falls around 05/13, about 258 days from today. The first fall frost typically arrives around 09/27, about 134 frost-free days later.
Browerville sits in USDA Zone 4a (-30 to -25°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 4a around Browerville 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.
Why 05/13 isn't a guarantee
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Browerville compares
At roughly 134 frost-free days, Browerville places 37,990 of 40,283 ZIP codes in this dataset. Within MN, it ranks 812 of 943.
Learn more
zone vs. frost date explains why Zone 4a and Browerville's frost date answer different questions, and the frost range explains how to read the range around Browerville's dates instead of trusting one.