Sitka City and Borough Climate
Sitka City and Borough, Alaska
Avg Annual Temp
43.9°F
Annual Precip
152.8"
Annual Snowfall
101.8"
Extreme Heat Days
0
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Sitka City and Borough Weather
Extreme precipitation defines this coastal hub
Sitka averages 43.9°F annually, which is mild for Alaska but cool compared to the national average. The standout data is the 152.8 inches of annual precipitation, which is roughly five times the national average. This creates a unique temperate rainforest environment with no extreme heat.
A maritime warm spot with record rain
Sitka is much warmer than the state average of 35.9°F and is among the wettest places in Alaska. Its 152.8 inches of precipitation dwarfs the state average of 54.8 inches. This oceanic climate ensures that temperatures rarely drop to the extremes seen in the interior.
The wettest of its coastal neighbors
Sitka receives 152.8 inches of rain, far exceeding Petersburg (110.2") and Prince of Wales-Hyder (104.9"). It also sees more snow than its southern neighbors, averaging 101.8 inches per year. It shares a similar 43-44°F temperature range with other Southeast Alaska counties.
Wet winters and cool, misty summers
Winters are mild at 34.7°F but very snowy, with an annual total of 101.8 inches. July is cool and often cloudy, averaging 55.8°F with no extreme heat days over 90°F. The year is characterized by consistent moisture rather than temperature swings.
Plan for water in every form
Commercial-grade rain gear is a necessity for the nearly 153 inches of annual precipitation. Homeowners must prioritize drainage and roof maintenance to handle the heavy combination of rain and 101.8 inches of snow. Cooling is not a concern, as summer temperatures remain very mild.
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.