Hanley Falls, MN 56245 Frost Dates
56245, near Hanley Falls, MN: the frost window
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/01, roughly 150 days after the last spring frost.
Hanley Falls 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
Hanley Falls'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 Hanley Falls's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Hanley Falls against the rest of the dataset
At roughly 150 frost-free days, Hanley Falls places 35,423 of 40,283 ZIP codes in this dataset. Within MN, it ranks 544 of 943.
Learn more
Two guides worth reading on 56245: zone vs. frost date, on why Zone 4b and Hanley Falls's frost date answer different questions, and the frost range, on how to read the range around Hanley Falls's dates instead of trusting one.