Fullerton, ND 58441 Frost Dates
58441, near Fullerton, ND: the frost window
The last spring frost here typically falls around 05/09, about 254 days from today. Fall's first freeze usually shows up around 09/28, roughly 141 days after the last spring frost.
Fullerton sits in USDA Zone 4b (-25 to -20°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
Fullerton'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 Fullerton's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
Fullerton against the rest of the dataset
About 141 days separate Fullerton's last and first frost, putting it 37,015 of 40,283 ZIP codes nationally. Within ND, it ranks 120 of 405.
Learn more
Two guides worth reading on 58441: zone vs. frost date, on why Zone 4b and Fullerton's frost date answer different questions, and the frost range, on how to read the range around Fullerton's dates instead of trusting one.