Akutan, AK 99553 Frost Dates
99553, near Akutan, AK: the frost window
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/18, roughly 164 days after the last spring frost.
Akutan sits in USDA Zone 8a (10 to 15°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.
Stretching the season past the first frost
Akutan's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/06 isn't a guarantee
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Akutan against the rest of the dataset
Akutan's growing season runs about 164 days, ranking 31,014 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 28 of 269.
Learn more
Two guides worth reading on 99553: local microclimates, on what one yard in Akutan can differ from the 99553 normal, and zone vs. frost date, on why Zone 8a and Akutan's frost date answer different questions.