Hallock, MN 56728 Frost Dates
56728, near Hallock, 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 09/30, roughly 142 days after the last spring frost.
Hallock sits in USDA Zone 3b (-35 to -30°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
Hallock'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 Hallock'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 05/24 and only about 1 year in 10 sees frost after that.
Hallock against the rest of the dataset
At roughly 142 frost-free days, Hallock places 36,773 of 40,283 ZIP codes in this dataset. Within MN, it ranks 693 of 943.
Learn more
Two guides worth reading on 56728: local microclimates, on what one yard in Hallock can differ from the 56728 normal, and zone vs. frost date, on why Zone 3b and Hallock's frost date answer different questions.