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Green Valley CDP, California

Official LSAD Designation: Green Valley CDP • Census GEOID: 0631092 • Los Angeles County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Green Valley CDP.

Reference Weather Station: FAIRMONT, CA US (ID: USC00042941) • Located 6.2 miles from community center • Elevation: 932.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 56.3° 37.6° 46.9° 3.67"
February 58.0° 39.1° 48.6° 4.43"
March 63.1° 42.6° 52.9° 2.46"
April 68.4° 46.1° 57.2° 0.95"
May 76.1° 52.8° 64.5° 0.37"
June 85.6° 61.8° 73.7° 0.08"
July 92.1° 67.7° 79.9° 0.10"
August 93.2° 67.8° 80.5° 0.04"
September 88.0° 62.0° 75.0° 0.15"
October 76.7° 52.9° 64.8° 0.72"
November 64.6° 43.5° 54.1° 0.66"
December 55.3° 36.7° 46.0° 2.21"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station FAIRMONT, CA US (ID: USC00042941) • 6.2 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 FAIRMONT, CA 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. 45.0 53.5 62.0 70.5 79.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 63.7°F 2014: Annual mean 65.8°F 2016: Annual mean 64.5°F 2017: Annual mean 65.1°F 2018: Annual mean 64.8°F 2020: Annual mean 63.5°F 2021: Annual mean 63.5°F 2022: Annual mean 62.3°F 2023: Annual mean 58.6°F 2024: Annual mean 62.8°F 2025: Annual mean 62.4°F 2012: Annual mean of daily highs 75.8°F 2014: Annual mean of daily highs 76.1°F 2016: Annual mean of daily highs 74.2°F 2017: Annual mean of daily highs 74.4°F 2018: Annual mean of daily highs 74.5°F 2019: Annual mean of daily highs 70.5°F 2020: Annual mean of daily highs 74.3°F 2021: Annual mean of daily highs 74.6°F 2022: Annual mean of daily highs 74.1°F 2023: Annual mean of daily highs 69.4°F 2024: Annual mean of daily highs 73.9°F 2025: Annual mean of daily highs 73.7°F 2012: Annual mean of daily lows 51.6°F 2014: Annual mean of daily lows 55.5°F 2016: Annual mean of daily lows 54.8°F 2017: Annual mean of daily lows 55.8°F 2018: Annual mean of daily lows 55.1°F 2020: Annual mean of daily lows 52.7°F 2021: Annual mean of daily lows 52.4°F 2022: Annual mean of daily lows 50.5°F 2023: Annual mean of daily lows 47.8°F 2024: Annual mean of daily lows 51.7°F 2025: Annual mean of daily lows 51.2°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 63.7 75.8 51.6
2013 Unavailable Unavailable Unavailable
2014 65.8 76.1 55.5
2015 Unavailable Unavailable Unavailable
2016 64.5 74.2 54.8
2017 65.1 74.4 55.8
2018 64.8 74.5 55.1
2019 Unavailable 70.5 Unavailable
2020 63.5 74.3 52.7
2021 63.5 74.6 52.4
2022 62.3 74.1 50.5
2023 58.6 69.4 47.8
2024 62.8 73.9 51.7
2025 62.4 73.7 51.2
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.