Sebeka, MN 56477 Frost Dates
56477, near Sebeka, MN: the frost window
Around 05/10 is the usual last spring frost, about 255 days away. Fall's first freeze usually shows up around 09/30, roughly 141 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sebeka in Zone 4a (-30 to -25°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
Sebeka's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/25 and only about 1 year in 10 sees frost after that.
Sebeka against the rest of the dataset
Sebeka's growing season runs about 141 days, ranking 36,952 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 723 of 943.
Learn more
Two guides worth reading on 56477: the frost range, on how to read the range around Sebeka's dates instead of trusting one, and local microclimates, on what one yard in Sebeka can differ from the 56477 normal.