Bowdon, ND 58418 Frost Dates
58418, near Bowdon, 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 09/29, roughly 139 days after the last spring frost.
Bowdon sits in USDA Zone 4a (-30 to -25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Bowdon's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/13 isn't a guarantee
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 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.
Bowdon against the rest of the dataset
At roughly 139 frost-free days, Bowdon places 37,294 of 40,283 ZIP codes in this dataset. Within ND, it ranks 154 of 405.
Learn more
Two guides worth reading on 58418: local microclimates, on what one yard in Bowdon can differ from the 58418 normal, and zone vs. frost date, on why Zone 4a and Bowdon's frost date answer different questions.