Little Falls, MN 56345 Frost Dates
Little Falls, MN: when does the frost end?
The last spring frost here typically falls around 05/04, about 249 days from today. Fall's first freeze usually shows up around 10/05, roughly 151 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Little Falls 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
With roughly 5 weeks until Little Falls's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/04 isn't a guarantee
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 05/22 and only about 1 year in 10 sees frost after that.
Little Falls against the rest of the dataset
About 151 days separate Little Falls's last and first frost, putting it 34,973 of 40,283 ZIP codes nationally. Within MN, it ranks 485 of 943.
Learn more
Before leaning on 56345's figures: the frost range explains how to read the range around Little Falls's dates instead of trusting one, while local microclimates explains what one yard in Little Falls can differ from the 56345 normal.