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Acalanes Ridge CDP, California

Official LSAD Designation: Acalanes Ridge CDP • Census GEOID: 0600135 • Contra Costa County

Climate Normals & Weather Observations

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

Reference Weather Station: CONCORD WWTP, CA US (ID: USC00041967) • Located 5.5 miles from community center • Elevation: 12.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 58.4° 41.7° 50.1° 3.46"
February 63.2° 44.1° 53.7° 3.57"
March 67.7° 46.8° 57.2° 2.57"
April 72.2° 49.2° 60.7° 1.23"
May 78.0° 53.1° 65.5° 0.61"
June 84.6° 56.7° 70.7° 0.12"
July 88.3° 58.3° 73.3° 0.00"
August 88.2° 58.8° 73.5° 0.02"
September 86.1° 57.6° 71.9° 0.06"
October 78.2° 53.1° 65.6° 0.68"
November 66.7° 45.9° 56.3° 1.87"
December 58.7° 41.2° 49.9° 3.55"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CONCORD WWTP, CA US (ID: USC00041967) • 5.5 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 CONCORD WWTP, 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. 46.0 54.3 62.5 70.8 79.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 60.7°F 2013: Annual mean 62.1°F 2014: Annual mean 64.4°F 2015: Annual mean 63.8°F 2016: Annual mean 63.3°F 2017: Annual mean 63.2°F 2018: Annual mean 62.9°F 2011: Annual mean of daily highs 72.2°F 2013: Annual mean of daily highs 74.3°F 2014: Annual mean of daily highs 76.0°F 2015: Annual mean of daily highs 75.9°F 2016: Annual mean of daily highs 75.1°F 2017: Annual mean of daily highs 75.1°F 2018: Annual mean of daily highs 74.8°F 2010: Annual mean of daily lows 50.2°F 2011: Annual mean of daily lows 49.2°F 2013: Annual mean of daily lows 49.8°F 2014: Annual mean of daily lows 52.9°F 2015: Annual mean of daily lows 51.7°F 2016: Annual mean of daily lows 51.5°F 2017: Annual mean of daily lows 51.4°F 2018: Annual mean of daily lows 51.1°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 50.2
2011 60.7 72.2 49.2
2012 Unavailable Unavailable Unavailable
2013 62.1 74.3 49.8
2014 64.4 76.0 52.9
2015 63.8 75.9 51.7
2016 63.3 75.1 51.5
2017 63.2 75.1 51.4
2018 62.9 74.8 51.1
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
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.