Dassel, MN 55325 Frost Dates
Dassel, 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 10/10, roughly 162 days after the last spring frost.
Zone 4b (-25 to -20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Dassel, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Dassel's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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 05/12 and only about 1 year in 10 sees frost after that.
Dassel against the rest of the dataset
About 162 days separate Dassel's last and first frost, putting it 31,775 of 40,283 ZIP codes nationally. Within MN, it ranks 182 of 943.
Learn more
Before leaning on 55325's figures: the frost range explains how to read the range around Dassel's dates instead of trusting one, while local microclimates explains what one yard in Dassel can differ from the 55325 normal.