Lower Kalskag, AK 99626 Frost Dates
When can you plant in Lower Kalskag, AK?
The last spring frost here typically falls around 05/21, about 266 days from today. The first fall frost typically arrives around 09/22, about 122 frost-free days later.
Lower Kalskag sits in USDA Zone 3b (-35 to -30°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.
What to do before the first frost
About 4 weeks of growing season left in Lower Kalskag before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/21 isn't a guarantee
05/21 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lower Kalskag compares
Lower Kalskag's growing season runs about 122 days, ranking 38,981 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 126 of 269.
Learn more
zone vs. frost date covers why Zone 3b and Lower Kalskag's frost date answer different questions. the frost range covers how to read the range around Lower Kalskag's dates instead of trusting one.