Flasher, ND 58564 Frost Dates
58564, near Flasher, ND: the frost window
Around 05/13 is the usual last spring frost, about 258 days away. Fall's first freeze usually shows up around 09/27, roughly 135 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Flasher in Zone 4a (-30 to -25°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
Flasher'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
05/13 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 05/28 and only about 1 year in 10 sees frost after that.
Flasher against the rest of the dataset
At roughly 135 frost-free days, Flasher places 37,920 of 40,283 ZIP codes in this dataset. Within ND, it ranks 263 of 405.
Learn more
Two guides worth reading on 58564: the frost range, on how to read the range around Flasher's dates instead of trusting one, and local microclimates, on what one yard in Flasher can differ from the 58564 normal.