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Bothell city, Washington

Official LSAD Designation: Bothell city • Census GEOID: 5307380 • King County / Snohomish County

Climate Normals & Weather Observations

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

Reference Weather Station: SEATTLE SAND PT WSFO, WA US (ID: USW00094290) • Located 6.4 miles from community center • Elevation: 18.3 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 47.4° 37.2° 42.3° 5.14"
February 49.8° 37.0° 43.4° 3.54"
March 53.9° 39.2° 46.6° 3.86"
April 58.8° 42.8° 50.8° 2.98"
May 65.3° 48.3° 56.8° 2.16"
June 70.2° 52.7° 61.4° 1.57"
July 76.5° 56.5° 66.5° 0.78"
August 77.0° 57.1° 67.1° 1.00"
September 71.3° 53.2° 62.3° 1.74"
October 60.5° 46.7° 53.6° 3.65"
November 51.9° 40.9° 46.4° 5.85"
December 46.5° 37.0° 41.8° 5.55"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station SEATTLE SAND PT WSFO, WA US (ID: USW00094290) • 6.4 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 SEATTLE SAND PT WSFO, WA 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. 42.0 48.0 54.0 60.0 66.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 53.2°F 2011: Annual mean 51.8°F 2012: Annual mean 52.8°F 2013: Annual mean 53.2°F 2014: Annual mean 54.9°F 2015: Annual mean 55.6°F 2016: Annual mean 55.1°F 2017: Annual mean 53.4°F 2018: Annual mean 54.3°F 2019: Annual mean 53.3°F 2020: Annual mean 54.0°F 2021: Annual mean 53.8°F 2022: Annual mean 53.5°F 2024: Annual mean 54.2°F 2025: Annual mean 54.9°F 2010: Annual mean of daily highs 60.4°F 2011: Annual mean of daily highs 58.9°F 2012: Annual mean of daily highs 59.8°F 2013: Annual mean of daily highs 60.4°F 2014: Annual mean of daily highs 62.5°F 2015: Annual mean of daily highs 63.5°F 2016: Annual mean of daily highs 62.7°F 2017: Annual mean of daily highs 61.2°F 2018: Annual mean of daily highs 62.0°F 2019: Annual mean of daily highs 60.8°F 2020: Annual mean of daily highs 61.4°F 2021: Annual mean of daily highs 61.5°F 2022: Annual mean of daily highs 61.2°F 2024: Annual mean of daily highs 62.0°F 2025: Annual mean of daily highs 63.0°F 2010: Annual mean of daily lows 46.1°F 2011: Annual mean of daily lows 44.6°F 2012: Annual mean of daily lows 45.7°F 2013: Annual mean of daily lows 45.9°F 2014: Annual mean of daily lows 47.3°F 2015: Annual mean of daily lows 47.8°F 2016: Annual mean of daily lows 47.6°F 2017: Annual mean of daily lows 45.6°F 2018: Annual mean of daily lows 46.7°F 2019: Annual mean of daily lows 45.7°F 2020: Annual mean of daily lows 46.5°F 2021: Annual mean of daily lows 46.2°F 2022: Annual mean of daily lows 45.8°F 2024: Annual mean of daily lows 46.5°F 2025: Annual mean of daily lows 46.8°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 53.2 60.4 46.1
2011 51.8 58.9 44.6
2012 52.8 59.8 45.7
2013 53.2 60.4 45.9
2014 54.9 62.5 47.3
2015 55.6 63.5 47.8
2016 55.1 62.7 47.6
2017 53.4 61.2 45.6
2018 54.3 62.0 46.7
2019 53.3 60.8 45.7
2020 54.0 61.4 46.5
2021 53.8 61.5 46.2
2022 53.5 61.2 45.8
2023 Unavailable Unavailable Unavailable
2024 54.2 62.0 46.5
2025 54.9 63.0 46.8
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.