Lake Lillian, MN 56253 Frost Dates
Lake Lillian, MN: when does the frost end?
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/07, roughly 159 days after the last spring frost.
Lake Lillian 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
With roughly 6 weeks until Lake Lillian's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Lake Lillian against the rest of the dataset
About 159 days separate Lake Lillian's last and first frost, putting it 32,775 of 40,283 ZIP codes nationally. Within MN, it ranks 276 of 943.
Learn more
Before leaning on 56253's figures: the frost range explains how to read the range around Lake Lillian's dates instead of trusting one, while local microclimates explains what one yard in Lake Lillian can differ from the 56253 normal.