Napa September 11 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of September 11.
September 11 All-Time Records
1901–2024
Highest temperature 107 °F 1979
Lowest temperature 40 °F 2005
Lowest daily high 66 °F 1925
Highest daily low 65 °F 2022
Most precipitation 0.24 inches 1985
September 11 Average Weather
1991–2020 1
Average high 81.2 °F
Average low 51.3 °F
Chance precipitation 2.4%
Napa September 11 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 81 50 0.00 n/a
2022 84 65 0.00 n/a
2021 78 53 0.00 n/a
2020 80 48 0.00 n/a
2019 85 50 0.00 n/a
2018 81 46 0.00 n/a
2017 98 62 0.02 0.0
2016 72 55 0.00 n/a
2015 87 52 0.00 n/a
2014 90 52 0.00 n/a
2013 79 63 0.00 n/a
2012 76 52 0.00 n/a
2011 75 58 0.00 n/a
2010 88 48 0.00 n/a
2009 92 49 0.00 n/a
2008 78 51 0.00 n/a
2007 81 54 0.00 n/a
2006 90 48 0.00 n/a
2005 74 40 0.00 n/a
2004 85 48 0.00 n/a
2003 95 49 0.00 n/a
2002 83 46 0.00 n/a
2001 78 47 0.00 n/a
2000 84 51 0.00 n/a
1999 71 56 0.00 n/a
1998 88 52 0.00 0.0
1997 83 55 0.00 0.0
1996 80 52 0.00 0.0
1995 82 54 0.00 0.0
1994 76 49 0.00 0.0
1993 77 53 0.00 0.0
1992 78 53 0.00 0.0
1991 78 50 0.00 0.0
1990 78 55 0.00 0.0
1989 71 56 0.00 0.0
1988 91 51 0.00 0.0
1987 79 48 0.00 0.0
1986 85 52 0.00 0.0
1985 72 46 0.24 0.0
1984 77 49 0.00 0.0
1983 102 55 0.00 0.0
1982 95 63 0.00 0.0
1981 78 52 0.00 0.0
1980 76 56 0.00 0.0
1979 107 57 0.00 0.0
1978 84 51 0.00 0.0
1977 71 51 0.00 0.0
1976 75 58 0.06 0.0
1975 73 53 0.00 0.0
1974 98 56 0.00 0.0
1973 78 57 0.00 0.0
1972 70 46 0.00 0.0
1971 91 57 0.00 0.0
1970 87 49 0.00 0.0
1969 85 54 0.00 0.0
1968 78 54 0.00 0.0
1967 88 52 0.00 0.0
1966 81 50 0.00 0.0
1965 74 51 0.00 0.0
1964 80 45 0.00 0.0
1963 85 54 0.00 0.0
1962 79 50 0.00 0.0
1961 92 47 0.00 0.0
1960 93 55 0.00 0.0
1959 80 49 0.00 0.0
1958 78 48 0.00 0.0
1957 n/a 55 0.00 0.0
1956 78 49 0.00 0.0
1955 100 50 0.00 0.0
1954 80 55 0.00 0.0
1953 97 57 0.00 0.0
1952 74 44 0.02 0.0
1951 82 50 0.00 0.0
1950 73 53 0.00 0.0
1949 74 54 0.00 0.0
1948 97 48 0.00 0.0
1947 86 55 0.00 n/a
1946 79 44 0.00 n/a
1945 85 53 0.00 n/a
1944 78 50 0.00 n/a
1943 83 45 0.00 n/a
1942 90 53 0.00 n/a
1941 81 52 0.00 n/a
1940 81 54 0.00 n/a
1939 76 51 0.00 n/a
1938 86 50 0.00 n/a
1937 72 50 0.00 n/a
1936 72 47 0.00 n/a
1935 72 45 0.00 n/a
1934 72 48 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 75 48 0.00 n/a
1931 85 43 0.00 n/a
1930 79 46 0.00 n/a
1929 89 51 0.00 n/a
1928 67 44 0.00 n/a
1927 78 47 0.00 n/a
1926 67 55 0.00 n/a
1925 66 49 0.00 n/a
1924 91 50 0.00 n/a
1923 71 50 0.00 n/a
1922 90 52 0.00 n/a
1921 70 53 0.00 n/a
1920 82 51 0.00 n/a
1919 83 47 0.00 n/a
1918 87 58 0.00 n/a
1917 86 46 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 74 52 0.00 n/a
1913 91 56 0.00 n/a
1912 92 51 0.00 n/a
1911 73 45 0.00 n/a
1910 79 50 0.00 n/a
1909 91 50 n/a n/a
1908 102 65 0.00 n/a
1907 78 50 0.00 n/a
1906 88 50 0.00 n/a
1905 72 60 0.00 n/a
1904 72 50 0.00 n/a
1903 92 52 0.00 n/a
1902 79 56 0.00 n/a
1901 76 54 0.00 n/a
What's the all-time high for Napa on 9/11?
For the date of Sep 11, the highest temperature ever reached in Napa history is 107 °F which happened in 1979.
Highest Temperatures in Napa on September 11
Rank Temperature Year
1 107 °F 1979
2 102 °F 1908
2 102 °F 1983
4 100 °F 1955
5 98 °F 2017
5 98 °F 1974
7 97 °F 1948
7 97 °F 1953
9 95 °F 2003
9 95 °F 1982
What's the all-time low for Napa on 9/11?
For the date of Sep 11, the lowest temperature ever reached in Napa history is 40 °F which happened in 2005.
Lowest Temperatures in Napa on September 11
Rank Temperature Year
1 40 °F 2005
2 43 °F 1931
3 44 °F 1946
3 44 °F 1952
3 44 °F 1928
6 45 °F 1935
6 45 °F 1964
6 45 °F 1943
6 45 °F 1911
10 46 °F 1972
10 46 °F 1917
10 46 °F 1930
10 46 °F 2002
10 46 °F 2018
10 46 °F 1985
Lowest High Temperatures in Napa on September 11
Rank Temperature Year
1 66 °F 1925
2 67 °F 1928
2 67 °F 1926
4 70 °F 1921
4 70 °F 1972
6 71 °F 1989
6 71 °F 1977
6 71 °F 1923
6 71 °F 1999
10 72 °F 2016
10 72 °F 1934
10 72 °F 1936
10 72 °F 1985
10 72 °F 1937
10 72 °F 1904
10 72 °F 1935
10 72 °F 1905
What's the most it has ever rained in Napa on 9/11?
For the date of Sep 11, the most precipitation ever recorded in Napa history is 0.24 inches which happened in 1985.
All-Time Most Precipitation in Napa on September 11
Rank Precipitation Year
1 0.24 inches 1985
2 0.06 inches 1976
3 0.02 inches 1952
3 0.02 inches 2017
Weather Station Details
Years Station Coordinates
1999–2024 Napa County Airport location
1901–1998 Napa State Hospital location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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