Strasburg, ND 58573 Frost Dates
58573, near Strasburg, ND: the frost window
Typically, the last spring freeze lands around 05/12, roughly 257 days out. Fall's first freeze usually shows up around 09/28, roughly 137 days after the last spring frost.
Strasburg sits in USDA Zone 4a (-30 to -25°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
Strasburg'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.
How much risk comes with planting early here
05/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/25 and only about 1 year in 10 sees frost after that.
Strasburg against the rest of the dataset
Strasburg's growing season runs about 137 days, ranking 37,573 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 213 of 405.
Learn more
Two guides worth reading on 58573: the frost range, on how to read the range around Strasburg's dates instead of trusting one, and local microclimates, on what one yard in Strasburg can differ from the 58573 normal.