Mountain Village, AK 99632 Frost Dates
99632, near Mountain Village, 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 Mountain Village in Zone 4a (-30 to -25°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
Mountain Village'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.
How much risk comes with planting early here
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.
Mountain Village against the rest of the dataset
Mountain Village's growing season runs about 122 days, ranking 38,961 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 110 of 269.
Learn more
Two guides worth reading on 99632: zone vs. frost date, on why Zone 4a and Mountain Village's frost date answer different questions, and the frost range, on how to read the range around Mountain Village's dates instead of trusting one.