Steele, ND 58482 Frost Dates
Steele, ND: when does the frost end?
The last spring frost here typically falls around 05/15, about 260 days from today. Fall's first freeze usually shows up around 09/25, roughly 133 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Steele in Zone 4a (-30 to -25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 4 weeks until Steele's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Steele against the rest of the dataset
About 133 days separate Steele's last and first frost, putting it 38,085 of 40,283 ZIP codes nationally. Within ND, it ranks 276 of 405.
Learn more
Before leaning on 58482's figures: local microclimates explains what one yard in Steele can differ from the 58482 normal, while zone vs. frost date explains why Zone 4a and Steele's frost date answer different questions.