McClusky, ND 58463 Frost Dates
58463, near McClusky, ND: the frost window
Around 05/14 is the usual last spring frost, about 259 days away. Fall's first freeze usually shows up around 09/26, roughly 136 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 McClusky, not a forecast for this year.
Stretching the season past the first frost
McClusky'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.
Why 05/14 isn't a guarantee
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/26 and only about 1 year in 10 sees frost after that.
McClusky against the rest of the dataset
McClusky's growing season runs about 136 days, ranking 37,784 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 236 of 405.
Learn more
Two guides worth reading on 58463: local microclimates, on what one yard in McClusky can differ from the 58463 normal, and zone vs. frost date, on why Zone 4b and McClusky's frost date answer different questions.