Juneau City and Borough Climate
Juneau City and Borough, Alaska
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
41.9°F
Annual Precip
92.5"
Annual Snowfall
81.9"
Extreme Heat Days
0
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
625
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Juneau City and Borough
Climate Verdict
Juneau City and Borough has a cool, averaging 41.9°F annually, very wet conditions receiving 92.5 inches of precipitation annually, heavy winter snowfall averaging 81.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 27.8°F. summers are cool, with July averaging only 56.3°F. The climate is remarkably stable year-round, with only a 29°F difference between January and July.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Juneau City and Borough is 6.2°F warmer than the Alaska statewide average of 35.7°F, it is also noticeably wetter, receiving 39.0 inches more precipitation than the state average.
Climate Profile
About Juneau City and Borough Weather
A Cool, Wet Maritime Capital
Juneau's 41.9°F average temperature sits roughly 12 degrees below the national median. As a temperate rainforest, it receives a staggering 92.5 inches of annual precipitation.
Milder and Wetter than Average Alaska
Juneau is much warmer than the 35.9°F state average but far wetter than the 54.8-inch state precipitation mean. Its coastal position keeps January averages at a relatively manageable 27.8°F.
Consistent with its Southeast Neighbors
Juneau shares a 41.9°F average temperature with Hoonah-Angoon, though it is slightly drier. It is significantly warmer and wetter than the interior Fairbanks North Star Borough.
Cool Summers and Snowy Winters
Summer temperatures average just 55.5°F, with zero days reaching 90°F. The city sees 81.9 inches of annual snowfall, adding to the high total precipitation that falls year-round.
Prepare for Dampness and Slush
Residents need high-quality rain shells and boots for the 92.5 inches of annual rain. Winter driving requires tires suited for heavy slush rather than just dry ice, given the 29.2°F winter average.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.