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Fountain Valley city, California

Official LSAD Designation: Fountain Valley city • Census GEOID: 0625380 • Orange County

Climate Normals & Weather Observations

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

Reference Weather Station: SANTA ANA JOHN WAYNE AP, CA US (ID: USW00093184) • Located 5.3 miles from community center • Elevation: 16.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 67.0° 48.6° 57.8° 2.59"
February 66.7° 50.1° 58.4° 2.64"
March 67.7° 52.3° 60.0° 1.62"
April 70.2° 54.9° 62.6° 0.52"
May 71.3° 59.3° 65.3° 0.27"
June 74.1° 62.6° 68.3° 0.01"
July 78.9° 66.2° 72.5° 0.04"
August 80.4° 67.1° 73.8° 0.01"
September 79.9° 65.0° 72.5° 0.10"
October 76.5° 59.2° 67.8° 0.54"
November 71.9° 53.3° 62.6° 0.80"
December 66.5° 48.3° 57.4° 2.04"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station SANTA ANA JOHN WAYNE AP, CA US (ID: USW00093184) • 5.3 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 SANTA ANA JOHN WAYNE AP, 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. 54.0 60.0 66.0 72.0 78.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 64.7°F 2012: Annual mean 65.8°F 2013: Annual mean 64.9°F 2015: Annual mean 67.4°F 2016: Annual mean 65.8°F 2017: Annual mean 66.2°F 2018: Annual mean 66.3°F 2019: Annual mean 65.3°F 2020: Annual mean 67.4°F 2021: Annual mean 66.0°F 2022: Annual mean 67.5°F 2023: Annual mean 64.9°F 2024: Annual mean 65.0°F 2010: Annual mean of daily highs 72.5°F 2012: Annual mean of daily highs 74.1°F 2013: Annual mean of daily highs 73.5°F 2015: Annual mean of daily highs 75.9°F 2016: Annual mean of daily highs 74.0°F 2017: Annual mean of daily highs 74.4°F 2018: Annual mean of daily highs 74.2°F 2019: Annual mean of daily highs 72.9°F 2020: Annual mean of daily highs 76.0°F 2021: Annual mean of daily highs 74.0°F 2022: Annual mean of daily highs 75.7°F 2023: Annual mean of daily highs 72.2°F 2024: Annual mean of daily highs 72.3°F 2010: Annual mean of daily lows 56.8°F 2012: Annual mean of daily lows 57.5°F 2013: Annual mean of daily lows 56.4°F 2014: Annual mean of daily lows 60.9°F 2015: Annual mean of daily lows 58.9°F 2016: Annual mean of daily lows 57.5°F 2017: Annual mean of daily lows 58.1°F 2018: Annual mean of daily lows 58.4°F 2019: Annual mean of daily lows 57.6°F 2020: Annual mean of daily lows 58.9°F 2021: Annual mean of daily lows 58.0°F 2022: Annual mean of daily lows 59.4°F 2023: Annual mean of daily lows 57.5°F 2024: Annual mean of daily lows 57.7°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 64.7 72.5 56.8
2011 Unavailable Unavailable Unavailable
2012 65.8 74.1 57.5
2013 64.9 73.5 56.4
2014 Unavailable Unavailable 60.9
2015 67.4 75.9 58.9
2016 65.8 74.0 57.5
2017 66.2 74.4 58.1
2018 66.3 74.2 58.4
2019 65.3 72.9 57.6
2020 67.4 76.0 58.9
2021 66.0 74.0 58.0
2022 67.5 75.7 59.4
2023 64.9 72.2 57.5
2024 65.0 72.3 57.7
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.