Brandon, MN 56315 Frost Dates
Brandon, MN: when does the frost end?
The last spring frost here typically falls around 05/02, about 247 days from today. Fall's first freeze usually shows up around 10/08, roughly 159 days after the last spring frost.
Brandon 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.
Stretching the season past the first frost
With roughly 6 weeks until Brandon's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Brandon against the rest of the dataset
Brandon's growing season runs about 159 days, ranking 32,735 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 269 of 943.
Learn more
Before leaning on 56315's figures: zone vs. frost date explains why Zone 4b and Brandon's frost date answer different questions, while the frost range explains how to read the range around Brandon's dates instead of trusting one.