Dover, MN 55929 Frost Dates
Dover, MN: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/06, roughly 159 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 Dover, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Dover'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 04/15 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.
Dover against the rest of the dataset
About 159 days separate Dover's last and first frost, putting it 32,710 of 40,283 ZIP codes nationally. Within MN, it ranks 265 of 943.
Learn more
Before leaning on 55929's figures: the frost range explains how to read the range around Dover's dates instead of trusting one, while local microclimates explains what one yard in Dover can differ from the 55929 normal.