Lonsdale, MN 55046 Frost Dates
Lonsdale, MN: when does the frost end?
Typically, the last spring freeze lands around 05/05, roughly 250 days out. Fall's first freeze usually shows up around 10/05, roughly 152 days after the last spring frost.
Lonsdale 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 5 weeks until Lonsdale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lonsdale's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Lonsdale against the rest of the dataset
At roughly 152 frost-free days, Lonsdale places 34,752 of 40,283 ZIP codes in this dataset. Within MN, it ranks 439 of 943.
Learn more
Before leaning on 55046's figures: the frost range explains how to read the range around Lonsdale's dates instead of trusting one, while local microclimates explains what one yard in Lonsdale can differ from the 55046 normal.