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Santa Rosa city, California

Official LSAD Designation: Santa Rosa city • Census GEOID: 0670098 • Sonoma County

Climate Normals & Weather Observations

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

Reference Weather Station: SANTA ROSA, CA US (ID: USC00047965) • Located 0.8 miles from community center • Elevation: 50.6 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 59.7° 38.4° 49.1° 5.78"
February 63.6° 40.0° 51.8° 6.39"
March 66.9° 41.9° 54.4° 4.26"
April 70.6° 43.9° 57.3° 1.98"
May 74.5° 47.8° 61.1° 1.28"
June 80.2° 51.1° 65.6° 0.29"
July 81.6° 52.1° 66.9° 0.01"
August 83.0° 52.5° 67.7° 0.04"
September 83.9° 51.0° 67.5° 0.15"
October 78.9° 47.6° 63.3° 1.63"
November 67.1° 42.0° 54.6° 3.25"
December 59.0° 38.2° 48.6° 6.47"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station SANTA ROSA, CA US (ID: USC00047965) • 0.8 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 ROSA, 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. 43.0 52.0 61.0 70.0 79.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2018: Annual mean 59.8°F 2020: Annual mean 60.7°F 2021: Annual mean 60.0°F 2018: Annual mean of daily highs 73.4°F 2020: Annual mean of daily highs 75.3°F 2021: Annual mean of daily highs 73.7°F 2010: Annual mean of daily lows 46.0°F 2018: Annual mean of daily lows 46.2°F 2020: Annual mean of daily lows 46.1°F 2021: Annual mean of daily lows 46.3°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 46.0
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 59.8 73.4 46.2
2019 Unavailable Unavailable Unavailable
2020 60.7 75.3 46.1
2021 60.0 73.7 46.3
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.