Federal Dam, MN 56641 Frost Dates
Federal Dam, MN: when does the frost end?
Typically, the last spring freeze lands around 05/08, roughly 253 days out. Fall's first freeze usually shows up around 10/01, roughly 144 days after the last spring frost.
Federal Dam 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
With roughly 5 weeks until Federal Dam's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Federal Dam's last frost
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
Federal Dam against the rest of the dataset
At roughly 144 frost-free days, Federal Dam places 36,475 of 40,283 ZIP codes in this dataset. Within MN, it ranks 674 of 943.
Learn more
Before leaning on 56641's figures: the frost range explains how to read the range around Federal Dam's dates instead of trusting one, while local microclimates explains what one yard in Federal Dam can differ from the 56641 normal.