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West Richland city, Washington

Official LSAD Designation: West Richland city • Census GEOID: 5377665 • Benton County

Climate Normals & Weather Observations

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

Reference Weather Station: RICHLAND, WA US (ID: USC00457015) • Located 5.9 miles from community center • Elevation: 113.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 40.6° 28.8° 34.7° 1.04"
February 47.5° 30.1° 38.8° 0.67"
March 57.1° 35.1° 46.1° 0.64"
April 65.1° 41.0° 53.0° 0.62"
May 73.9° 48.3° 61.1° 0.63"
June 80.2° 54.4° 67.3° 0.56"
July 89.3° 60.0° 74.7° 0.23"
August 88.1° 59.0° 73.6° 0.13"
September 78.9° 51.4° 65.2° 0.29"
October 64.3° 41.7° 53.0° 0.54"
November 49.0° 33.6° 41.3° 0.87"
December 39.9° 28.4° 34.1° 1.07"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station RICHLAND, WA US (ID: USC00457015) • 5.9 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 RICHLAND, 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. 38.0 46.8 55.5 64.3 73.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 53.4°F 2011: Annual mean 52.2°F 2012: Annual mean 53.7°F 2013: Annual mean 53.2°F 2016: Annual mean 55.1°F 2017: Annual mean 52.3°F 2018: Annual mean 54.5°F 2019: Annual mean 51.8°F 2020: Annual mean 56.9°F 2021: Annual mean 55.7°F 2022: Annual mean 52.8°F 2023: Annual mean 54.4°F 2024: Annual mean 54.7°F 2025: Annual mean 55.7°F 2010: Annual mean of daily highs 63.6°F 2011: Annual mean of daily highs 63.2°F 2012: Annual mean of daily highs 64.7°F 2013: Annual mean of daily highs 64.3°F 2016: Annual mean of daily highs 65.8°F 2017: Annual mean of daily highs 62.6°F 2018: Annual mean of daily highs 65.2°F 2019: Annual mean of daily highs 61.7°F 2020: Annual mean of daily highs 69.3°F 2021: Annual mean of daily highs 66.5°F 2022: Annual mean of daily highs 63.2°F 2023: Annual mean of daily highs 64.7°F 2024: Annual mean of daily highs 65.3°F 2025: Annual mean of daily highs 66.4°F 2010: Annual mean of daily lows 43.2°F 2011: Annual mean of daily lows 41.3°F 2012: Annual mean of daily lows 42.7°F 2013: Annual mean of daily lows 42.1°F 2016: Annual mean of daily lows 44.4°F 2017: Annual mean of daily lows 42.0°F 2018: Annual mean of daily lows 43.8°F 2019: Annual mean of daily lows 41.8°F 2020: Annual mean of daily lows 44.4°F 2021: Annual mean of daily lows 44.8°F 2022: Annual mean of daily lows 42.3°F 2023: Annual mean of daily lows 44.0°F 2024: Annual mean of daily lows 44.1°F 2025: Annual mean of daily lows 45.0°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 53.4 63.6 43.2
2011 52.2 63.2 41.3
2012 53.7 64.7 42.7
2013 53.2 64.3 42.1
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 55.1 65.8 44.4
2017 52.3 62.6 42.0
2018 54.5 65.2 43.8
2019 51.8 61.7 41.8
2020 56.9 69.3 44.4
2021 55.7 66.5 44.8
2022 52.8 63.2 42.3
2023 54.4 64.7 44.0
2024 54.7 65.3 44.1
2025 55.7 66.4 45.0
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.