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Napa Weather Records

Napa, California weather data and records from 1901–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in Napa, California was 113.0 °F45.0 °C which occurred on June 14, 1961.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Napa, California was 14.0 °F-10.0 °C which occurred on December 22, 1990.
Lowest Temperatures: All-Time By Year
Napa Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 58.414.7 63.217.3 67.319.6 71.822.1 76.424.7 82.027.8 83.228.5 83.528.6 84.329.0 77.925.5 66.118.9 58.214.6 72.722.6
🌙 Average low (°F°C) 40.24.6 41.85.4 43.66.5 45.57.5 49.99.9 53.612.0 55.413.0 55.413.0 53.411.9 49.49.6 43.56.4 39.84.3 47.78.7
☀️ Record high (°F°C) 84.929.4 81.027.2 91.933.3 95.035.0 104.040.0 113.045.0 111.944.4 107.141.7 111.043.9 106.041.1 89.131.7 81.027.2 113.045.0
🌙 Record low (°F°C) 19.0-7.2 23.0-5.0 23.0-5.0 27.0-2.8 30.0-1.1 34.01.1 37.93.3 37.02.8 36.02.2 28.0-2.2 25.0-3.9 14.0-10.0 14.0-10.0
💧 Average precipitation (inchescm) 5.113.0 4.912.4 3.69.1 1.84.4 1.02.7 0.20.6 0.00.0 0.10.1 0.10.2 1.33.4 2.87.1 5.513.9 26.467.1
💧 Daily % chance precipitation 38.8 36.3 30.6 22.2 11.9 3.7 0.1 0.5 3.3 12.0 26.8 38.4 18.6
❄️ Average snow (inchescm) 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0
More Napa Weather Records
1901–2022
Highest daily low 80.1 °F26.7 °C May 15, 2008
Lowest daily high 30.0 °F-1.1 °C February 4, 1903
Most daily precipitation 5.9 inches14.9 cm November 21, 1977
Most monthly precipitation 16.1 inches41.0 cm December 1955
Most yearly precipitation 51.2 inches130.2 cm 1983
Earliest freeze October 12 1932
Latest freeze May 18 1974
Most daily snow 2.5 inches6.4 cm January 6, 1907
Most monthly snow 2.5 inches6.4 cm January 1907
Most yearly snow 2.5 inches6.4 cm 1907
Napa Weather Streaks
Most consecutive days...
With precipitation 24 days Jan 31 – Feb 23, 1998
Without precipitation 175 days May 1 – Oct 22, 1987
High temperature ≥ 80 °F27 °C 60 days Jun 29 – Aug 27, 1932
High temperature ≥ 90 °F32 °C 11 days Sep 22 – Oct 2, 1970
High temperature ≥ 100 °F38 °C 7 days Jul 2–8, 1905
Napa Weather by Year
1901 1902 1903 1904 1905 1906 1907 1908 1909 1910
1911 1912 1913 1914 1915 1917 1918 1919 1920 1921
1922 1923 1924 1925 1926 1927 1928 1929 1930 1931
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
1942 1943 1944 1945 1946 1947 1948 1949 1950 1951
1952 1953 1954 1955 1956 1957 1958 1959 1960 1961
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
2022
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Napa Records for Today
Weather Station Details
Years Station Coordinates
1901–2022 Napa State Hospital location
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