Napa September 23 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of September 23.
September 23 All-Time Records
1901–2024
Highest temperature 106 °F 1939
Lowest temperature 39 °F 2005
Lowest daily high 62 °F 1901
Highest daily low 64 °F 1913
Most precipitation 1.98 inches 1904
September 23 Average Weather
1991–2020 1
Average high 79.7 °F
Average low 49.7 °F
Chance precipitation 4.6%
Napa September 23 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 73 46 0.00 n/a
2022 90 52 0.00 n/a
2021 88 45 0.00 n/a
2020 86 51 0.00 n/a
2019 86 50 0.00 n/a
2018 74 45 0.00 n/a
2017 84 43 0.00 0.0
2016 81 43 0.00 n/a
2015 80 43 0.00 n/a
2014 80 46 0.00 n/a
2013 81 50 0.00 n/a
2012 83 46 0.00 n/a
2011 90 51 0.00 n/a
2010 81 48 0.00 n/a
2009 78 50 0.00 n/a
2008 89 44 0.00 n/a
2007 74 47 0.00 n/a
2006 86 45 0.00 n/a
2005 75 39 0.00 n/a
2004 89 45 0.00 n/a
2003 77 51 0.00 n/a
2002 94 47 0.00 n/a
2001 70 44 0.00 n/a
2000 79 46 0.00 n/a
1999 74 52 0.00 n/a
1998 71 51 0.00 0.0
1997 99 55 0.00 0.0
1996 79 49 0.00 0.0
1995 78 54 0.00 0.0
1994 77 56 0.00 0.0
1993 80 46 0.00 0.0
1992 84 57 0.00 0.0
1991 89 49 0.00 0.0
1990 81 56 0.36 0.0
1989 94 58 0.00 0.0
1988 83 45 0.00 0.0
1987 69 53 0.00 0.0
1986 68 51 0.00 0.0
1985 80 52 0.00 0.0
1984 78 55 0.00 0.0
1983 78 61 0.00 0.0
1982 79 49 0.00 0.0
1981 83 49 0.00 0.0
1980 94 50 0.00 0.0
1979 89 53 0.00 0.0
1978 90 47 0.00 0.0
1977 79 49 0.00 0.0
1976 79 48 0.00 0.0
1975 93 53 0.00 0.0
1974 78 50 0.00 0.0
1973 78 56 0.02 0.0
1972 81 44 0.00 0.0
1971 78 48 0.00 0.0
1970 92 50 0.00 0.0
1969 83 48 0.00 0.0
1968 94 49 0.00 0.0
1967 85 56 0.00 0.0
1966 84 48 0.00 0.0
1965 77 48 0.00 0.0
1964 96 56 0.00 0.0
1963 83 46 0.00 0.0
1962 92 47 0.00 0.0
1961 76 46 0.00 0.0
1960 90 44 0.00 0.0
1959 82 51 0.00 0.0
1958 75 48 0.00 0.0
1957 n/a 49 0.00 0.0
1956 97 54 0.00 0.0
1955 70 50 0.00 0.0
1954 91 50 0.00 0.0
1953 85 49 0.00 0.0
1952 85 52 0.00 0.0
1951 71 50 0.00 0.0
1950 84 50 0.00 0.0
1949 100 56 0.00 0.0
1948 74 43 0.00 0.0
1947 n/a n/a 0.00 n/a
1946 95 50 0.00 n/a
1945 89 43 0.00 n/a
1944 93 47 0.00 n/a
1943 95 58 0.00 n/a
1942 80 45 0.00 n/a
1941 87 44 0.00 n/a
1940 78 52 0.00 n/a
1939 106 62 0.00 n/a
1938 75 46 0.00 n/a
1937 82 45 0.00 n/a
1936 93 45 0.00 n/a
1935 73 50 0.00 n/a
1934 70 49 0.03 n/a
1933 n/a n/a 0.00 n/a
1932 87 39 0.00 n/a
1931 83 41 0.00 n/a
1930 73 48 0.00 n/a
1929 76 43 0.00 n/a
1928 70 50 0.00 n/a
1927 73 46 0.00 n/a
1926 82 46 0.00 n/a
1925 74 47 0.00 n/a
1924 72 42 0.00 n/a
1923 64 55 0.00 n/a
1922 86 46 0.00 n/a
1921 86 52 0.00 n/a
1920 73 55 0.15 n/a
1919 97 49 0.00 n/a
1918 74 48 0.00 n/a
1917 74 42 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 68 45 0.00 n/a
1913 83 64 0.00 n/a
1912 73 56 0.00 n/a
1911 68 46 0.00 n/a
1910 78 49 0.00 n/a
1909 76 50 n/a n/a
1908 83 57 0.00 n/a
1907 72 55 0.00 n/a
1906 68 57 0.00 n/a
1905 73 54 0.00 n/a
1904 67 55 1.98 n/a
1903 84 47 0.00 n/a
1902 85 49 0.00 n/a
1901 62 51 0.54 n/a
What's the all-time high for Napa on 9/23?
For the date of Sep 23, the highest temperature ever reached in Napa history is 106 °F which happened in 1939.
Highest Temperatures in Napa on September 23
Rank Temperature Year
1 106 °F 1939
2 100 °F 1949
3 99 °F 1997
4 97 °F 1956
4 97 °F 1919
6 96 °F 1964
7 95 °F 1943
7 95 °F 1946
9 94 °F 1989
9 94 °F 2002
9 94 °F 1980
9 94 °F 1968
What's the all-time low for Napa on 9/23?
For the date of Sep 23, the lowest temperature ever reached in Napa history is 39 °F which has happened 2 times, most recently in 2005.
Lowest Temperatures in Napa on September 23
Rank Temperature Year
1 39 °F 2005
1 39 °F 1932
3 41 °F 1931
4 42 °F 1924
4 42 °F 1917
6 43 °F 1945
6 43 °F 1948
6 43 °F 1929
6 43 °F 2016
6 43 °F 2017
6 43 °F 2015
Lowest High Temperatures in Napa on September 23
Rank Temperature Year
1 62 °F 1901
2 64 °F 1923
3 67 °F 1904
4 68 °F 1911
4 68 °F 1914
4 68 °F 1986
4 68 °F 1906
8 69 °F 1987
9 70 °F 2001
9 70 °F 1928
9 70 °F 1934
9 70 °F 1955
What's the most it has ever rained in Napa on 9/23?
For the date of Sep 23, the most precipitation ever recorded in Napa history is 1.98 inches which happened in 1904.
All-Time Most Precipitation in Napa on September 23
Rank Precipitation Year
1 1.98 inches 1904
2 0.54 inches 1901
3 0.36 inches 1990
4 0.15 inches 1920
5 0.03 inches 1934
6 0.02 inches 1973
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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