Brownsville, MN 55919 Frost Dates
55919, near Brownsville, MN: the frost window
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/17, roughly 178 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Brownsville in Zone 5a (-20 to -15°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
Brownsville's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Brownsville against the rest of the dataset
Brownsville's growing season runs about 178 days, ranking 25,871 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 12 of 943.
Learn more
Two guides worth reading on 55919: zone vs. frost date, on why Zone 5a and Brownsville's frost date answer different questions, and the frost range, on how to read the range around Brownsville's dates instead of trusting one.