Palmer, AK 99674 Frost Dates
When can you plant in Palmer, AK?
The last spring frost here typically falls around 06/01, about 277 days from today. The first fall frost typically arrives around 09/06, about 98 frost-free days later.
Zone 4b (-25 to -20°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 Palmer, not a forecast for this year.
What to do before the first frost
About 1 week of growing season left in Palmer before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Palmer's last frost
06/01 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. 06/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Palmer compares
About 98 days separate Palmer's last and first frost, putting it 39,754 of 40,283 ZIP codes nationally. Within AK, it ranks 203 of 269.
Learn more
the frost range covers how to read the range around Palmer's dates instead of trusting one. local microclimates covers what one yard in Palmer can differ from the 99674 normal.