Goodnews Bay, AK 99589 Frost Dates
99589, near Goodnews Bay, AK: the frost window
Typically, the last spring freeze lands around 05/21, roughly 266 days out. Fall's first freeze usually shows up around 09/22, roughly 122 days after the last spring frost.
Goodnews Bay sits in USDA Zone 4b (-25 to -20°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
Goodnews Bay'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 Goodnews Bay'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.
Goodnews Bay against the rest of the dataset
About 122 days separate Goodnews Bay's last and first frost, putting it 38,982 of 40,283 ZIP codes nationally. Within AK, it ranks 127 of 269.
Learn more
Two guides worth reading on 99589: local microclimates, on what one yard in Goodnews Bay can differ from the 99589 normal, and zone vs. frost date, on why Zone 4b and Goodnews Bay's frost date answer different questions.