Kenmare, ND 58746 Frost Dates
Kenmare, ND: when does the frost end?
Around 05/15 is the usual last spring frost, about 260 days away. Fall's first freeze usually shows up around 09/23, roughly 129 days after the last spring frost.
Kenmare 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
With roughly 4 weeks until Kenmare'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 05/03 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.
Kenmare against the rest of the dataset
About 129 days separate Kenmare's last and first frost, putting it 38,472 of 40,283 ZIP codes nationally. Within ND, it ranks 311 of 405.
Learn more
Before leaning on 58746's figures: local microclimates explains what one yard in Kenmare can differ from the 58746 normal, while zone vs. frost date explains why Zone 4a and Kenmare's frost date answer different questions.