Minto, ND 58261 Frost Dates
Minto, ND: when does the frost end?
The last spring frost here typically falls around 05/04, about 249 days from today. Fall's first freeze usually shows up around 10/07, roughly 156 days after the last spring frost.
Zone 4a (-30 to -25°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 Minto, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Minto's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Minto against the rest of the dataset
About 156 days separate Minto's last and first frost, putting it 33,773 of 40,283 ZIP codes nationally. Within ND, it ranks 13 of 405.
Learn more
Before leaning on 58261's figures: zone vs. frost date explains why Zone 4a and Minto's frost date answer different questions, while the frost range explains how to read the range around Minto's dates instead of trusting one.