Napa September 12 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of September 12.
September 12 All-Time Records
1901–2024
Highest temperature 107 °F 1979
Lowest temperature 40 °F 2005
Lowest daily high 68 °F 1921
Highest daily low 67 °F 2000
Most precipitation 1.44 inches 1918
September 12 Average Weather
1991–2020 1
Average high 81.1 °F
Average low 51.3 °F
Chance precipitation 2.5%
Napa September 12 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 75 60 0.00 n/a
2022 79 61 0.00 n/a
2021 83 50 0.00 n/a
2020 87 47 0.00 n/a
2019 92 53 0.00 n/a
2018 75 46 0.00 n/a
2017 86 58 0.00 0.0
2016 69 55 0.00 n/a
2015 81 54 0.00 n/a
2014 86 49 0.00 n/a
2013 79 57 0.00 n/a
2012 76 50 0.00 n/a
2011 80 54 0.00 n/a
2010 71 49 0.00 n/a
2009 73 58 0.01 n/a
2008 71 52 0.00 n/a
2007 75 60 0.00 n/a
2006 95 50 0.00 n/a
2005 70 40 0.00 n/a
2004 80 58 0.00 n/a
2003 99 52 0.00 n/a
2002 74 49 0.00 n/a
2001 71 50 0.00 n/a
2000 84 67 0.00 n/a
1999 73 55 0.00 n/a
1998 92 58 0.00 0.0
1997 83 55 0.00 0.0
1996 75 52 0.00 0.0
1995 82 53 0.00 0.0
1994 75 52 0.00 0.0
1993 78 53 0.00 0.0
1992 82 52 0.00 0.0
1991 77 50 0.00 0.0
1990 81 52 0.00 0.0
1989 85 53 0.00 0.0
1988 90 61 0.00 0.0
1987 72 48 0.00 0.0
1986 72 56 0.00 0.0
1985 79 47 0.00 0.0
1984 84 50 0.00 0.0
1983 105 60 0.00 0.0
1982 90 51 0.00 0.0
1981 76 53 0.00 0.0
1980 74 53 0.00 0.0
1979 107 57 0.00 0.0
1978 88 59 0.00 0.0
1977 74 50 0.00 0.0
1976 77 53 0.00 0.0
1975 73 53 0.00 0.0
1974 96 54 0.00 0.0
1973 75 52 0.00 0.0
1972 80 44 0.00 0.0
1971 101 55 0.00 0.0
1970 85 46 0.00 0.0
1969 75 52 0.00 0.0
1968 78 56 0.00 0.0
1967 94 55 0.00 0.0
1966 76 45 0.00 0.0
1965 80 42 0.00 0.0
1964 79 47 0.00 0.0
1963 83 53 0.29 0.0
1962 78 50 0.00 0.0
1961 85 50 0.00 0.0
1960 93 50 0.00 0.0
1959 79 50 0.00 0.0
1958 78 56 0.00 0.0
1957 n/a 47 0.00 0.0
1956 77 47 0.00 0.0
1955 85 50 0.00 0.0
1954 84 47 0.00 0.0
1953 101 63 0.00 0.0
1952 80 49 0.00 0.0
1951 81 51 0.00 0.0
1950 75 54 0.00 0.0
1949 72 48 0.00 0.0
1948 92 48 0.00 0.0
1947 90 49 0.00 n/a
1946 92 42 0.00 n/a
1945 90 52 0.00 n/a
1944 83 50 0.00 n/a
1943 91 48 0.00 n/a
1942 94 45 0.00 n/a
1941 79 44 0.00 n/a
1940 78 60 0.00 n/a
1939 71 54 0.00 n/a
1938 84 50 0.00 n/a
1937 92 53 0.00 n/a
1936 71 51 0.00 n/a
1935 80 49 0.00 n/a
1934 78 43 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 81 45 0.00 n/a
1931 91 46 0.00 n/a
1930 76 47 0.00 n/a
1929 97 47 0.00 n/a
1928 74 44 0.01 n/a
1927 74 46 0.00 n/a
1926 70 47 0.00 n/a
1925 70 50 0.00 n/a
1924 89 45 0.00 n/a
1923 72 51 0.00 n/a
1922 87 51 0.00 n/a
1921 68 50 0.00 n/a
1920 82 52 0.00 n/a
1919 87 45 0.00 n/a
1918 81 59 1.44 n/a
1917 81 45 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 83 47 0.00 n/a
1913 76 55 0.00 n/a
1912 95 58 0.00 n/a
1911 74 50 0.00 n/a
1910 69 48 0.00 n/a
1909 94 60 n/a n/a
1908 86 58 0.00 n/a
1907 76 51 0.00 n/a
1906 78 53 0.00 n/a
1905 73 61 0.00 n/a
1904 81 55 0.00 n/a
1903 81 50 0.00 n/a
1902 80 55 0.00 n/a
1901 70 53 0.00 n/a
What's the all-time high for Napa on 9/12?
For the date of Sep 12, the highest temperature ever reached in Napa history is 107 °F which happened in 1979.
Highest Temperatures in Napa on September 12
Rank Temperature Year
1 107 °F 1979
2 105 °F 1983
3 101 °F 1953
3 101 °F 1971
5 99 °F 2003
6 97 °F 1929
7 96 °F 1974
8 95 °F 1912
8 95 °F 2006
10 94 °F 1967
10 94 °F 1942
10 94 °F 1909
What's the all-time low for Napa on 9/12?
For the date of Sep 12, the lowest temperature ever reached in Napa history is 40 °F which happened in 2005.
Lowest Temperatures in Napa on September 12
Rank Temperature Year
1 40 °F 2005
2 42 °F 1946
2 42 °F 1965
4 43 °F 1934
5 44 °F 1972
5 44 °F 1928
5 44 °F 1941
8 45 °F 1966
8 45 °F 1932
8 45 °F 1942
8 45 °F 1924
8 45 °F 1919
8 45 °F 1917
Lowest High Temperatures in Napa on September 12
Rank Temperature Year
1 68 °F 1921
2 69 °F 2016
2 69 °F 1910
4 70 °F 2005
4 70 °F 1926
4 70 °F 1901
4 70 °F 1925
8 71 °F 1939
8 71 °F 2008
8 71 °F 2001
8 71 °F 2010
8 71 °F 1936
What's the most it has ever rained in Napa on 9/12?
For the date of Sep 12, the most precipitation ever recorded in Napa history is 1.44 inches which happened in 1918.
All-Time Most Precipitation in Napa on September 12
Rank Precipitation Year
1 1.44 inches 1918
2 0.29 inches 1963
3 0.01 inches 1928
3 0.01 inches 2009
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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