Soldotna, AK 99610 Frost Dates
Soldotna, AK: when does the frost end?
Typically, the last spring freeze lands around 06/11, roughly 287 days out. Fall's first freeze usually shows up around 09/01, roughly 75 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Soldotna in Zone 4b (-25 to -20°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
With roughly 1 week until Soldotna's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Soldotna's last frost
06/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 07/07 and only about 1 year in 10 sees frost after that.
Soldotna against the rest of the dataset
At roughly 75 frost-free days, Soldotna places 40,095 of 40,283 ZIP codes in this dataset. Within AK, it ranks 253 of 269.
Learn more
Before leaning on 99610's figures: local microclimates explains what one yard in Soldotna can differ from the 99610 normal, while zone vs. frost date explains why Zone 4b and Soldotna's frost date answer different questions.