Alaska Frost Dates

Across Alaska, the average last spring frost ranges from Apr 4 in Ketchikan to May 24 in Kenai. Find your town below, or enter your ZIP code for the nearest station.

Largest cities

AnchorageFairbanksJuneau

Average frost dates in Alaska towns

Average (50%) dates of the last 32°F frost in spring and the first in fall, from the nearest NOAA station. Towns with 5,000+ residents.

TownLast frostFirst frostSeason (days)
AnchorageMay 16Sep 20125
BethelMay 21Sep 22122
FairbanksMay 16Sep 6112
HomerMay 10Sep 29141
JuneauMay 3Oct 14164
KenaiMay 24Sep 12110
KetchikanApr 4Nov 9218
KodiakApr 29Oct 14168
PalmerMay 6Sep 25140
SitkaMay 3Oct 18166
WasillaMay 16Sep 23128