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Juneau city and borough, Alaska

Official LSAD Designation: Juneau city and borough • Census GEOID: 0236400 • Juneau City and Borough

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Juneau city and borough.

Reference Weather Station: JUNEAU DWTN, AK US (ID: USC00504094) • Located 9.9 miles from community center • Elevation: 15.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 34.1° 26.5° 30.3° 5.88"
February 36.7° 27.7° 32.2° 5.16"
March 39.4° 29.6° 34.5° 6.17"
April 48.6° 35.8° 42.2° 4.76"
May 57.3° 43.1° 50.2° 5.09"
June 62.2° 49.0° 55.6° 4.90"
July 62.9° 51.8° 57.3° 6.21"
August 62.4° 51.0° 56.7° 7.76"
September 55.9° 46.3° 51.1° 12.71"
October 47.9° 39.4° 43.7° 12.27"
November 39.9° 32.1° 36.0° 8.75"
December 36.3° 28.7° 32.5° 9.93"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station JUNEAU DWTN, AK US (ID: USC00504094) • 9.9 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at JUNEAU DWTN, AK US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 35.0 39.8 44.5 49.3 54.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 41.8°F 2016: Annual mean 46.5°F 2018: Annual mean 44.5°F 2019: Annual mean 45.6°F 2020: Annual mean 43.2°F 2012: Annual mean of daily highs 46.5°F 2016: Annual mean of daily highs 51.5°F 2018: Annual mean of daily highs 49.8°F 2019: Annual mean of daily highs 51.0°F 2020: Annual mean of daily highs 47.7°F 2012: Annual mean of daily lows 37.2°F 2016: Annual mean of daily lows 41.5°F 2018: Annual mean of daily lows 39.3°F 2019: Annual mean of daily lows 40.2°F 2020: Annual mean of daily lows 38.7°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 41.8 46.5 37.2
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 46.5 51.5 41.5
2017 Unavailable Unavailable Unavailable
2018 44.5 49.8 39.3
2019 45.6 51.0 40.2
2020 43.2 47.7 38.7
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.