Bettles, AK 99726 Frost Dates
Frost dates for Bettles, AK, ZIP 99726
Typically, the last spring freeze lands around 05/22, roughly 267 days out. The first fall frost typically arrives around 08/24, about 94 frost-free days later.
Bettles sits in USDA Zone 1b (-55 to -50°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 last frost
Zone 1b gardeners near Bettles have about 38 weeks left before the last frost — cover tender transplants on any night that dips close to freezing.
Why 05/22 isn't a guarantee
05/22 is the middle of 30 years of NOAA records, not a promise. Plant by 05/11 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bettles compares
About 94 days separate Bettles's last and first frost, putting it 39,860 of 40,283 ZIP codes nationally. Within AK, it ranks 213 of 269.
Learn more
zone vs. frost date explains why Zone 1b and Bettles's frost date answer different questions, and the frost range explains how to read the range around Bettles's dates instead of trusting one.