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Hartley CDP, California

Official LSAD Designation: Hartley CDP • Census GEOID: 0632340 • Solano County

Climate Normals & Weather Observations

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

Reference Weather Station: VACAVILLE, CA US (ID: USC00049200) • Located 1.8 miles from community center • Elevation: 33.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 57.6° 39.6° 48.6° 5.55"
February 63.0° 42.2° 52.6° 5.14"
March 68.5° 44.8° 56.6° 3.37"
April 74.9° 48.0° 61.5° 1.23"
May 82.8° 52.9° 67.8° 0.78"
June 90.7° 57.7° 74.2° 0.22"
July 97.3° 60.2° 78.7° 0.00"
August 96.5° 59.5° 78.0° 0.06"
September 91.9° 57.5° 74.7° 0.13"
October 81.2° 51.8° 66.5° 1.01"
November 67.0° 44.5° 55.8° 2.44"
December 57.9° 39.5° 48.7° 5.67"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station VACAVILLE NUT TREE AP, CA US (ID: USW00093241) • 3.0 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00049200), which has no available annual mean history.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at VACAVILLE NUT TREE AP, 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 53.0 63.0 73.0 83.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 61.4°F 2011: Annual mean 60.1°F 2012: Annual mean 61.5°F 2013: Annual mean 61.5°F 2014: Annual mean 63.6°F 2015: Annual mean 64.0°F 2016: Annual mean 63.2°F 2017: Annual mean 63.6°F 2018: Annual mean 62.4°F 2019: Annual mean 62.4°F 2020: Annual mean 63.6°F 2021: Annual mean 63.0°F 2022: Annual mean 63.6°F 2023: Annual mean 61.6°F 2024: Annual mean 63.6°F 2025: Annual mean 62.3°F 2010: Annual mean of daily highs 73.4°F 2011: Annual mean of daily highs 73.2°F 2012: Annual mean of daily highs 75.5°F 2013: Annual mean of daily highs 76.6°F 2014: Annual mean of daily highs 77.6°F 2015: Annual mean of daily highs 78.4°F 2016: Annual mean of daily highs 77.0°F 2017: Annual mean of daily highs 77.2°F 2018: Annual mean of daily highs 77.4°F 2019: Annual mean of daily highs 76.1°F 2020: Annual mean of daily highs 79.0°F 2021: Annual mean of daily highs 77.5°F 2022: Annual mean of daily highs 79.1°F 2023: Annual mean of daily highs 75.5°F 2024: Annual mean of daily highs 77.9°F 2025: Annual mean of daily highs 75.8°F 2010: Annual mean of daily lows 49.4°F 2011: Annual mean of daily lows 47.0°F 2012: Annual mean of daily lows 47.4°F 2013: Annual mean of daily lows 46.4°F 2014: Annual mean of daily lows 49.6°F 2015: Annual mean of daily lows 49.5°F 2016: Annual mean of daily lows 49.4°F 2017: Annual mean of daily lows 50.0°F 2018: Annual mean of daily lows 47.5°F 2019: Annual mean of daily lows 48.6°F 2020: Annual mean of daily lows 48.3°F 2021: Annual mean of daily lows 48.6°F 2022: Annual mean of daily lows 48.0°F 2023: Annual mean of daily lows 47.7°F 2024: Annual mean of daily lows 49.2°F 2025: Annual mean of daily lows 48.8°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 61.4 73.4 49.4
2011 60.1 73.2 47.0
2012 61.5 75.5 47.4
2013 61.5 76.6 46.4
2014 63.6 77.6 49.6
2015 64.0 78.4 49.5
2016 63.2 77.0 49.4
2017 63.6 77.2 50.0
2018 62.4 77.4 47.5
2019 62.4 76.1 48.6
2020 63.6 79.0 48.3
2021 63.0 77.5 48.6
2022 63.6 79.1 48.0
2023 61.6 75.5 47.7
2024 63.6 77.9 49.2
2025 62.3 75.8 48.8
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.