Fisher, MN 56723 Frost Dates
56723, near Fisher, MN: the frost window
The last spring frost here typically falls around 05/11, about 256 days from today. Fall's first freeze usually shows up around 09/27, roughly 138 days after the last spring frost.
Zone 4a (-30 to -25°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 Fisher, not a forecast for this year.
Stretching the season past the first frost
Fisher's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/25 and only about 1 year in 10 sees frost after that.
Fisher against the rest of the dataset
About 138 days separate Fisher's last and first frost, putting it 37,450 of 40,283 ZIP codes nationally. Within MN, it ranks 774 of 943.
Learn more
Two guides worth reading on 56723: the frost range, on how to read the range around Fisher's dates instead of trusting one, and local microclimates, on what one yard in Fisher can differ from the 56723 normal.