Foreston, MN 56357 Frost Dates
56357, near Foreston, MN: the frost window
Typically, the last spring freeze lands around 05/08, roughly 253 days out. Fall's first freeze usually shows up around 10/01, roughly 143 days after the last spring frost.
Foreston 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
Foreston'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.
The actual range around Foreston's last frost
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
Foreston against the rest of the dataset
Foreston's growing season runs about 143 days, ranking 36,585 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 680 of 943.
Learn more
Two guides worth reading on 56357: the frost range, on how to read the range around Foreston's dates instead of trusting one, and local microclimates, on what one yard in Foreston can differ from the 56357 normal.