Fredonia, ND 58440 Frost Dates
58440, near Fredonia, ND: the frost window
Around 05/07 is the usual last spring frost, about 252 days away. Fall's first freeze usually shows up around 10/02, roughly 148 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 Fredonia, not a forecast for this year.
Stretching the season past the first frost
Fredonia'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.
The actual range around Fredonia's last frost
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Fredonia against the rest of the dataset
At roughly 148 frost-free days, Fredonia places 35,819 of 40,283 ZIP codes in this dataset. Within ND, it ranks 46 of 405.
Learn more
Two guides worth reading on 58440: local microclimates, on what one yard in Fredonia can differ from the 58440 normal, and zone vs. frost date, on why Zone 4b and Fredonia's frost date answer different questions.