Viking, MN 56760 Frost Dates
56760, near Viking, MN: the frost window
Around 05/14 is the usual last spring frost, about 259 days away. Fall's first freeze usually shows up around 09/28, roughly 135 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Viking in Zone 3b (-35 to -30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Viking'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.
The actual range around Viking's last frost
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Viking against the rest of the dataset
Viking's growing season runs about 135 days, ranking 37,934 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 809 of 943.
Learn more
Two guides worth reading on 56760: local microclimates, on what one yard in Viking can differ from the 56760 normal, and zone vs. frost date, on why Zone 3b and Viking's frost date answer different questions.