Browns Valley, MN 56219 Frost Dates
Browns Valley, MN: when does the frost end?
Around 05/09 is the usual last spring frost, about 254 days away. Fall's first freeze usually shows up around 09/28, roughly 141 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Browns Valley in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 4 weeks until Browns Valley's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Browns Valley's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Browns Valley against the rest of the dataset
Browns Valley's growing season runs about 141 days, ranking 36,970 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 726 of 943.
Learn more
Before leaning on 56219's figures: local microclimates explains what one yard in Browns Valley can differ from the 56219 normal, while zone vs. frost date explains why Zone 4b and Browns Valley's frost date answer different questions.