LaMoure, ND 58458 Frost Dates
LaMoure, ND: when does the frost end?
Typically, the last spring freeze lands around 05/10, roughly 255 days out. Fall's first freeze usually shows up around 09/28, roughly 140 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 LaMoure, not a forecast for this year.
Stretching the season past the first frost
With roughly 4 weeks until LaMoure's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around LaMoure's last frost
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
LaMoure against the rest of the dataset
LaMoure's growing season runs about 140 days, ranking 37,105 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 124 of 405.
Learn more
Before leaning on 58458's figures: local microclimates explains what one yard in LaMoure can differ from the 58458 normal, while zone vs. frost date explains why Zone 4b and LaMoure's frost date answer different questions.