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Sunnyvale city, California

Official LSAD Designation: Sunnyvale city • Census GEOID: 0677000 • Santa Clara County

Climate Normals & Weather Observations

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

Reference Weather Station: MOFFETT FEDERAL AIRFIELD, CA US (ID: USW00023244) • Located 1.8 miles from community center • Elevation: 11.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 59.0° 42.4° 50.7° 2.49"
February 61.8° 44.5° 53.1° 2.90"
March 65.0° 46.7° 55.8° 2.04"
April 68.0° 48.9° 58.4° 0.98"
May 71.7° 52.5° 62.1° 0.43"
June 75.9° 55.7° 65.8° 0.10"
July 76.9° 58.5° 67.7° 0.00"
August 76.9° 59.0° 68.0° 0.01"
September 77.7° 57.3° 67.5° 0.07"
October 74.1° 53.1° 63.6° 0.56"
November 65.5° 46.3° 55.9° 1.36"
December 58.9° 42.1° 50.5° 2.51"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MOFFETT FEDERAL AIRFIELD, CA US (ID: USW00023244) • 1.8 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 MOFFETT FEDERAL AIRFIELD, 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. 47.0 54.0 61.0 68.0 75.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 59.8°F 2012: Annual mean 59.8°F 2013: Annual mean 60.0°F 2014: Annual mean 62.6°F 2016: Annual mean 61.3°F 2017: Annual mean 61.1°F 2025: Annual mean 60.2°F 2011: Annual mean of daily highs 69.0°F 2012: Annual mean of daily highs 69.0°F 2013: Annual mean of daily highs 69.9°F 2014: Annual mean of daily highs 71.9°F 2016: Annual mean of daily highs 70.5°F 2017: Annual mean of daily highs 70.6°F 2025: Annual mean of daily highs 68.1°F 2011: Annual mean of daily lows 50.7°F 2012: Annual mean of daily lows 50.6°F 2013: Annual mean of daily lows 50.1°F 2014: Annual mean of daily lows 53.2°F 2016: Annual mean of daily lows 52.1°F 2017: Annual mean of daily lows 51.6°F 2025: Annual mean of daily lows 52.4°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 59.8 69.0 50.7
2012 59.8 69.0 50.6
2013 60.0 69.9 50.1
2014 62.6 71.9 53.2
2015 Unavailable Unavailable Unavailable
2016 61.3 70.5 52.1
2017 61.1 70.6 51.6
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 60.2 68.1 52.4
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.