North Pole, AK 99705 Frost Dates
Frost dates for North Pole, AK, ZIP 99705
Typically, the last spring freeze lands around 05/22, roughly 267 days out. The first fall frost typically arrives around 09/02, about 102 frost-free days later.
North Pole sits in USDA Zone 2a (-50 to -45°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.
What to do before the first frost
Zone 2a around North Pole has about 1 week left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/22 is the middle of 30 years of NOAA records, not a promise. Plant by 05/12 and you're betting against frost in roughly 9 years out of 10. 06/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How North Pole compares
North Pole's growing season runs about 102 days, ranking 39,653 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 184 of 269.
Learn more
zone vs. frost date explains why Zone 2a and North Pole's frost date answer different questions, and the frost range explains how to read the range around North Pole's dates instead of trusting one.