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Middletown CDP, California

Official LSAD Designation: Middletown CDP • Census GEOID: 0647332 • Lake County

Climate Normals & Weather Observations

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

Reference Weather Station: CALISTOGA, CA US (ID: USC00041312) • Located 10.8 miles from community center • Elevation: 121.9 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 58.8° 39.4° 49.1° 7.94"
February 61.7° 41.1° 51.4° 7.07"
March 65.7° 42.8° 54.2° 5.89"
April 70.3° 44.3° 57.3° 2.32"
May 76.5° 48.5° 62.5° 1.37"
June 84.5° 52.7° 68.6° 0.29"
July 89.5° 54.7° 72.1° 0.01"
August 89.1° 54.3° 71.7° 0.03"
September 87.4° 52.2° 69.8° 0.12"
October 78.6° 47.4° 63.0° 1.83"
November 65.9° 41.7° 53.8° 3.76"
December 57.7° 38.5° 48.1° 7.95"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CALISTOGA, CA US (ID: USC00041312) • 10.8 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 CALISTOGA, 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. 38.0 48.8 59.5 70.3 81.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 58.3°F 2012: Annual mean 58.9°F 2013: Annual mean 59.3°F 2014: Annual mean 61.9°F 2015: Annual mean 61.5°F 2016: Annual mean 60.7°F 2020: Annual mean 61.0°F 2023: Annual mean 59.2°F 2024: Annual mean 61.0°F 2025: Annual mean 60.3°F 2011: Annual mean of daily highs 74.0°F 2012: Annual mean of daily highs 75.5°F 2013: Annual mean of daily highs 77.0°F 2014: Annual mean of daily highs 75.2°F 2015: Annual mean of daily highs 76.1°F 2016: Annual mean of daily highs 73.3°F 2020: Annual mean of daily highs 76.6°F 2023: Annual mean of daily highs 73.1°F 2024: Annual mean of daily highs 75.6°F 2025: Annual mean of daily highs 74.0°F 2011: Annual mean of daily lows 42.6°F 2012: Annual mean of daily lows 42.4°F 2013: Annual mean of daily lows 41.7°F 2014: Annual mean of daily lows 48.5°F 2015: Annual mean of daily lows 46.8°F 2016: Annual mean of daily lows 48.1°F 2020: Annual mean of daily lows 45.4°F 2023: Annual mean of daily lows 45.4°F 2024: Annual mean of daily lows 46.3°F 2025: Annual mean of daily lows 46.5°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 58.3 74.0 42.6
2012 58.9 75.5 42.4
2013 59.3 77.0 41.7
2014 61.9 75.2 48.5
2015 61.5 76.1 46.8
2016 60.7 73.3 48.1
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 61.0 76.6 45.4
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 59.2 73.1 45.4
2024 61.0 75.6 46.3
2025 60.3 74.0 46.5
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.