Anderson, AK 99755 Frost Dates
99755, near Anderson, AK: the frost window
The last spring frost here typically falls around 06/06, about 282 days from today. Fall's first freeze usually shows up around 08/25, roughly 77 days after the last spring frost.
Zone 3b (-35 to -30°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 Anderson, not a forecast for this year.
Protecting what you plant early
About 40 weeks to go until the last frost in Anderson — anything tender already in the ground is still at risk until that date passes, which is what frost cloth is for.
Why 06/06 isn't a guarantee
06/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/30 and only about 1 year in 10 sees frost after that.
Anderson against the rest of the dataset
Anderson's growing season runs about 77 days, ranking 40,085 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 245 of 269.
Learn more
Two guides worth reading on 99755: the frost range, on how to read the range around Anderson's dates instead of trusting one, and local microclimates, on what one yard in Anderson can differ from the 99755 normal.