Kodiak Island Borough Climate
Kodiak Island Borough, Alaska
Avg Annual Temp
40.7°F
Annual Precip
80.5"
Annual Snowfall
50.0"
Extreme Heat Days
0
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Kodiak Island Borough Weather
Maritime Mildness in the North Pacific
Kodiak Island averages 40.7°F annually, kept cool but stable by the surrounding Pacific Ocean. This maritime climate avoids the extreme temperature swings found in the continental U.S.
Warmer and Rainier than Average Alaska
Kodiak's 40.7°F average is warmer than the 35.9°F state average. It receives 80.5 inches of precipitation annually, which is significantly higher than the statewide average of 54.8 inches.
Milder and Drier than Southeast Alaska
Kodiak is slightly cooler than Ketchikan (46.6°F) and receives roughly half the precipitation. It sees about 50 inches of snowfall annually, which is much less than the 204.5 inches found in Haines.
Cool Summers and Manageable Winters
Winter temperatures average a moderate 30.4°F, while summers are consistently cool at 53.2°F. The island experiences 50 inches of snow and zero days of extreme heat over 90°F.
Gear Up for Wind and Rain
Residents should prioritize wind-blocking and waterproof layers for the 80.5 inches of annual precipitation. Because winter stays near freezing, gear that handles slush and damp cold is better than heavy arctic parkas.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.