Emmonak, AK 99581 Frost Dates
When can you plant in Emmonak, AK?
Around 06/05 is the usual last spring frost, about 281 days away. The first fall frost typically arrives around 09/03, about 88 frost-free days later.
Zone 4a (-30 to -25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Emmonak, not a forecast for this year.
What to do before the first frost
About 1 week of growing season left in Emmonak before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Emmonak's last frost
06/05 is the middle of 30 years of NOAA records, not a promise. Plant by 05/20 and you're betting against frost in roughly 9 years out of 10. 06/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Emmonak compares
At roughly 88 frost-free days, Emmonak places 39,950 of 40,283 ZIP codes in this dataset. Within AK, it ranks 226 of 269.
Learn more
zone vs. frost date covers why Zone 4a and Emmonak's frost date answer different questions. the frost range covers how to read the range around Emmonak's dates instead of trusting one.