Akiak, AK 99552 Frost Dates
99552, near Akiak, AK: the frost window
Around 05/21 is the usual last spring frost, about 266 days away. Fall's first freeze usually shows up around 09/22, roughly 122 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Akiak in Zone 3b (-35 to -30°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
Akiak's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Akiak's last frost
05/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/02 and only about 1 year in 10 sees frost after that.
Akiak against the rest of the dataset
At roughly 122 frost-free days, Akiak places 38,971 of 40,283 ZIP codes in this dataset. Within AK, it ranks 119 of 269.
Learn more
Two guides worth reading on 99552: the frost range, on how to read the range around Akiak's dates instead of trusting one, and local microclimates, on what one yard in Akiak can differ from the 99552 normal.