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Mad River CDP, California

Official LSAD Designation: Mad River CDP • Census GEOID: 0645092 • Trinity County

Climate Normals & Weather Observations

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

Reference Weather Station: GRIZZLY CREEK SP, CA US (ID: USC00043647) • Located 22.2 miles from community center • Elevation: 125.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 49.6° 38.3° 43.9° 8.57"
February 52.3° 38.8° 45.5° 8.87"
March 55.1° 40.6° 47.9° 6.64"
April 59.6° 42.8° 51.2° 4.91"
May 64.9° 47.6° 56.3° 2.11"
June 68.8° 50.3° 59.5° 0.73"
July 73.2° 52.5° 62.8° 0.09"
August 73.3° 53.0° 63.2° 0.09"
September 71.9° 49.4° 60.7° 0.51"
October 62.7° 45.0° 53.9° 2.63"
November 53.9° 40.2° 47.0° 6.38"
December 48.5° 37.6° 43.0° 10.72"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station BIG BAR 4 E, CA US (ID: USC00040738) • 26.0 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00043647), which has no available annual mean history.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at BIG BAR 4 E, 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. 36.0 46.5 57.0 67.5 78.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2013: Annual mean 56.0°F 2014: Annual mean 58.5°F 2015: Annual mean 58.4°F 2013: Annual mean of daily highs 72.0°F 2014: Annual mean of daily highs 73.9°F 2015: Annual mean of daily highs 73.9°F 2013: Annual mean of daily lows 40.0°F 2014: Annual mean of daily lows 43.1°F 2015: Annual mean of daily lows 42.9°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 Unavailable Unavailable Unavailable
2013 56.0 72.0 40.0
2014 58.5 73.9 43.1
2015 58.4 73.9 42.9
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
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.