Mylo, ND 58353 Frost Dates
Mylo, ND: when does the frost end?
Around 05/22 is the usual last spring frost, about 267 days away. Fall's first freeze usually shows up around 09/20, roughly 120 days after the last spring frost.
Mylo sits in USDA Zone 3b (-35 to -30°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
With roughly 3 weeks until Mylo's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/03 and only about 1 year in 10 sees frost after that.
Mylo against the rest of the dataset
Mylo's growing season runs about 120 days, ranking 39,123 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 395 of 405.
Learn more
Before leaning on 58353's figures: local microclimates explains what one yard in Mylo can differ from the 58353 normal, while zone vs. frost date explains why Zone 3b and Mylo's frost date answer different questions.