Hazelton, ND 58544 Frost Dates
58544, near Hazelton, ND: the frost window
Typically, the last spring freeze lands around 05/13, roughly 258 days out. Fall's first freeze usually shows up around 09/28, roughly 136 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 Hazelton, not a forecast for this year.
Stretching the season past the first frost
Hazelton'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 Hazelton's last frost
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 05/26 and only about 1 year in 10 sees frost after that.
Hazelton against the rest of the dataset
At roughly 136 frost-free days, Hazelton places 37,796 of 40,283 ZIP codes in this dataset. Within ND, it ranks 240 of 405.
Learn more
Two guides worth reading on 58544: local microclimates, on what one yard in Hazelton can differ from the 58544 normal, and zone vs. frost date, on why Zone 4a and Hazelton's frost date answer different questions.