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Duarte city, California

Official LSAD Designation: Duarte city • Census GEOID: 0619990 • Los Angeles County

Climate Normals & Weather Observations

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

Reference Weather Station: MT WILSON CBS, CA US (ID: USC00046006) • Located 8.4 miles from community center • Elevation: 1,740.4 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 56.2° 38.1° 47.1° 7.73"
February 54.8° 36.6° 45.7° 8.26"
March 59.2° 38.8° 49.0° 5.11"
April 63.1° 41.7° 52.4° 2.05"
May 69.6° 48.2° 58.9° 1.05"
June 78.5° 57.5° 68.0° 0.21"
July 84.5° 64.2° 74.4° 0.21"
August 85.1° 63.9° 74.5° 0.01"
September 80.9° 59.0° 70.0° 0.32"
October 71.6° 51.3° 61.5° 1.31"
November 62.9° 43.4° 53.1° 1.88"
December 54.6° 37.4° 46.0° 4.03"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MT WILSON CBS, CA US (ID: USC00046006) • 8.4 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 MT WILSON CBS, 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. 45.0 52.3 59.5 66.8 74.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 59.1°F 2013: Annual mean 58.8°F 2014: Annual mean 60.8°F 2015: Annual mean 59.3°F 2012: Annual mean of daily highs 69.5°F 2013: Annual mean of daily highs 69.5°F 2014: Annual mean of daily highs 71.5°F 2015: Annual mean of daily highs 69.7°F 2012: Annual mean of daily lows 48.7°F 2013: Annual mean of daily lows 48.1°F 2014: Annual mean of daily lows 50.0°F 2015: Annual mean of daily lows 48.9°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 59.1 69.5 48.7
2013 58.8 69.5 48.1
2014 60.8 71.5 50.0
2015 59.3 69.7 48.9
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.