Shungnak, AK 99773 Frost Dates
When can you plant in Shungnak, AK?
Typically, the last spring freeze lands around 05/18, roughly 263 days out. The first fall frost typically arrives around 09/08, about 111 frost-free days later.
Zone 1b (-55 to -50°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 Shungnak, not a forecast for this year.
What to do before the first frost
About 2 weeks of growing season left in Shungnak before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/18 isn't a guarantee
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shungnak compares
Shungnak's growing season runs about 111 days, ranking 39,479 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 158 of 269.
Learn more
zone vs. frost date covers why Zone 1b and Shungnak's frost date answer different questions. the frost range covers how to read the range around Shungnak's dates instead of trusting one.