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Angwin CDP, California

Official LSAD Designation: Angwin CDP • Census GEOID: 0602168 • Napa County

Climate Normals & Weather Observations

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

Reference Weather Station: ANGWIN PACIFIC UNION COLLEGE, CA US (ID: USC00040212) • Located 0.7 miles from community center • Elevation: 522.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 53.7° 39.3° 46.5° 7.80"
February 55.9° 39.7° 47.8° 7.59"
March 60.3° 40.9° 50.6° 5.50"
April 65.9° 42.3° 54.1° 2.37"
May 72.7° 46.7° 59.7° 1.56"
June 80.0° 51.3° 65.7° 0.36"
July 84.6° 54.1° 69.4° 0.01"
August 84.3° 53.9° 69.1° 0.04"
September 81.3° 53.4° 67.4° 0.17"
October 72.4° 49.7° 61.1° 1.92"
November 59.8° 42.8° 51.3° 4.09"
December 52.7° 38.8° 45.8° 8.30"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station ANGWIN PACIFIC UNION COLLEGE, CA US (ID: USC00040212) • 0.7 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 ANGWIN PACIFIC UNION COLLEGE, 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. 42.0 50.3 58.5 66.8 75.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 55.5°F 2012: Annual mean 57.2°F 2013: Annual mean 58.4°F 2014: Annual mean 59.8°F 2015: Annual mean 59.6°F 2016: Annual mean 58.2°F 2017: Annual mean 58.7°F 2019: Annual mean 57.7°F 2020: Annual mean 58.5°F 2021: Annual mean 58.0°F 2022: Annual mean 58.6°F 2023: Annual mean 56.2°F 2024: Annual mean 58.4°F 2025: Annual mean 56.8°F 2010: Annual mean of daily highs 66.0°F 2012: Annual mean of daily highs 68.7°F 2013: Annual mean of daily highs 70.3°F 2014: Annual mean of daily highs 71.3°F 2015: Annual mean of daily highs 71.5°F 2016: Annual mean of daily highs 69.1°F 2017: Annual mean of daily highs 69.9°F 2019: Annual mean of daily highs 68.2°F 2020: Annual mean of daily highs 70.3°F 2021: Annual mean of daily highs 69.2°F 2022: Annual mean of daily highs 69.7°F 2023: Annual mean of daily highs 66.4°F 2024: Annual mean of daily highs 69.0°F 2025: Annual mean of daily highs 67.3°F 2010: Annual mean of daily lows 44.9°F 2012: Annual mean of daily lows 45.6°F 2013: Annual mean of daily lows 46.4°F 2014: Annual mean of daily lows 48.3°F 2015: Annual mean of daily lows 47.7°F 2016: Annual mean of daily lows 47.2°F 2017: Annual mean of daily lows 47.5°F 2019: Annual mean of daily lows 47.2°F 2020: Annual mean of daily lows 46.8°F 2021: Annual mean of daily lows 46.8°F 2022: Annual mean of daily lows 47.4°F 2023: Annual mean of daily lows 45.9°F 2024: Annual mean of daily lows 47.8°F 2025: Annual mean of daily lows 46.2°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 55.5 66.0 44.9
2011 Unavailable Unavailable Unavailable
2012 57.2 68.7 45.6
2013 58.4 70.3 46.4
2014 59.8 71.3 48.3
2015 59.6 71.5 47.7
2016 58.2 69.1 47.2
2017 58.7 69.9 47.5
2018 Unavailable Unavailable Unavailable
2019 57.7 68.2 47.2
2020 58.5 70.3 46.8
2021 58.0 69.2 46.8
2022 58.6 69.7 47.4
2023 56.2 66.4 45.9
2024 58.4 69.0 47.8
2025 56.8 67.3 46.2
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.