Soldotna, AK 99672 Frost Dates
Soldotna, AK: when does the frost end?
Typically, the last spring freeze lands around 05/20, roughly 265 days out. Fall's first freeze usually shows up around 09/21, roughly 123 days after the last spring frost.
Soldotna sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 3 weeks until Soldotna's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/01 and only about 1 year in 10 sees frost after that.
Soldotna against the rest of the dataset
About 123 days separate Soldotna's last and first frost, putting it 38,889 of 40,283 ZIP codes nationally. Within AK, it ranks 99 of 269.
Learn more
Before leaning on 99672's figures: the frost range explains how to read the range around Soldotna's dates instead of trusting one, while local microclimates explains what one yard in Soldotna can differ from the 99672 normal.