North Pole, AK 99702 Frost Dates
North Pole, AK: when does the frost end?
Around 05/20 is the usual last spring frost, about 265 days away. Fall's first freeze usually shows up around 09/01, roughly 104 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts North Pole in Zone 2a (-50 to -45°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 1 week until North Pole'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
05/20 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.
North Pole against the rest of the dataset
About 104 days separate North Pole's last and first frost, putting it 39,608 of 40,283 ZIP codes nationally. Within AK, it ranks 182 of 269.
Learn more
Before leaning on 99702's figures: the frost range explains how to read the range around North Pole's dates instead of trusting one, while local microclimates explains what one yard in North Pole can differ from the 99702 normal.