Juneau, AK 99811 Frost Dates
When can you plant in Juneau, AK?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/22, about 183 frost-free days later.
Juneau sits in USDA Zone 7a (0 to 5°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 8 weeks of growing season left in Juneau before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Juneau's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Juneau compares
At roughly 183 frost-free days, Juneau places 23,764 of 40,283 ZIP codes in this dataset. Within AK, it ranks 10 of 269.
Learn more
local microclimates covers what one yard in Juneau can differ from the 99811 normal. zone vs. frost date covers why Zone 7a and Juneau's frost date answer different questions.