Wasilla, AK 99567 Frost Dates
99567, near Wasilla, AK: the frost window
The last spring frost here typically falls around 05/18, about 263 days from today. Fall's first freeze usually shows up around 09/20, roughly 124 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Wasilla in Zone 5a (-20 to -15°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
Wasilla's growing season runs out in roughly 3 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Wasilla against the rest of the dataset
About 124 days separate Wasilla's last and first frost, putting it 38,826 of 40,283 ZIP codes nationally. Within AK, it ranks 96 of 269.
Learn more
Two guides worth reading on 99567: the frost range, on how to read the range around Wasilla's dates instead of trusting one, and local microclimates, on what one yard in Wasilla can differ from the 99567 normal.