Hankinson, ND 58041 Frost Dates
Hankinson, ND: when does the frost end?
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/03, roughly 152 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Hankinson in Zone 4b (-25 to -20°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 5 weeks until Hankinson'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
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Hankinson against the rest of the dataset
At roughly 152 frost-free days, Hankinson places 34,815 of 40,283 ZIP codes in this dataset. Within ND, it ranks 28 of 405.
Learn more
Before leaning on 58041's figures: local microclimates explains what one yard in Hankinson can differ from the 58041 normal, while zone vs. frost date explains why Zone 4b and Hankinson's frost date answer different questions.