Nulato, AK 99765 Frost Dates
99765, near Nulato, AK: the frost window
Typically, the last spring freeze lands around 05/25, roughly 270 days out. Fall's first freeze usually shows up around 09/03, roughly 101 days after the last spring frost.
Zone 2a (-50 to -45°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 Nulato, not a forecast for this year.
Stretching the season past the first frost
Nulato's growing season runs out in roughly 1 week — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Nulato's last frost
05/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/11 and only about 1 year in 10 sees frost after that.
Nulato against the rest of the dataset
Nulato's growing season runs about 101 days, ranking 39,689 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 188 of 269.
Learn more
Two guides worth reading on 99765: zone vs. frost date, on why Zone 2a and Nulato's frost date answer different questions, and the frost range, on how to read the range around Nulato's dates instead of trusting one.