Homer, AK 99556 Frost Dates
99556, near Homer, AK: the frost window
Around 05/16 is the usual last spring frost, about 261 days away. Fall's first freeze usually shows up around 09/30, roughly 136 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Homer in Zone 6a (-10 to -5°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
Homer's growing season runs out in roughly 5 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 Homer's last frost
05/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 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.
Homer against the rest of the dataset
About 136 days separate Homer's last and first frost, putting it 37,679 of 40,283 ZIP codes nationally. Within AK, it ranks 72 of 269.
Learn more
Two guides worth reading on 99556: the frost range, on how to read the range around Homer's dates instead of trusting one, and local microclimates, on what one yard in Homer can differ from the 99556 normal.