Napa September 4 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of September 4.
September 4 All-Time Records
1901–2024
Highest temperature 105 °F 1950
Lowest temperature 42 °F 1932
Lowest daily high 68 °F 1965
Highest daily low 65 °F 1950
Most precipitation none -
September 4 Average Weather
1991–2020 1
Average high 81.0 °F
Average low 52.3 °F
Chance precipitation 1.6%
Napa September 4 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 78 56 0.00 n/a
2022 100 54 0.00 n/a
2021 83 45 0.00 n/a
2020 80 55 0.00 n/a
2019 80 51 0.00 n/a
2018 75 54 0.00 n/a
2017 82 60 0.00 0.0
2016 76 45 0.00 n/a
2015 77 44 0.00 n/a
2014 76 56 0.00 n/a
2013 85 48 0.00 n/a
2012 76 48 0.00 n/a
2011 75 53 0.00 n/a
2010 73 50 0.00 n/a
2009 75 50 0.00 n/a
2008 99 51 0.00 n/a
2007 85 62 0.00 n/a
2006 74 51 0.00 n/a
2005 70 50 0.00 n/a
2004 100 58 0.00 n/a
2003 80 58 0.00 n/a
2002 80 47 0.00 n/a
2001 77 48 0.00 n/a
2000 75 43 0.00 n/a
1999 79 46 0.00 n/a
1998 80 63 0.00 0.0
1997 95 56 0.00 0.0
1996 78 53 0.00 0.0
1995 84 50 0.00 0.0
1994 91 55 0.00 0.0
1993 76 56 0.00 0.0
1992 81 50 0.00 0.0
1991 86 55 0.00 0.0
1990 81 51 0.00 0.0
1989 83 51 0.00 0.0
1988 94 55 0.00 0.0
1987 72 54 0.00 0.0
1986 n/a n/a 0.00 0.0
1985 76 54 0.00 0.0
1984 96 53 0.00 0.0
1983 96 57 0.00 0.0
1982 89 51 0.00 0.0
1981 79 52 0.00 0.0
1980 82 53 0.00 0.0
1979 86 57 0.00 0.0
1978 79 59 0.00 0.0
1977 90 58 0.00 0.0
1976 79 51 0.00 0.0
1975 96 54 0.00 0.0
1974 86 53 0.00 0.0
1973 74 50 0.00 0.0
1972 82 57 0.00 0.0
1971 94 50 0.00 0.0
1970 82 51 0.00 0.0
1969 80 52 0.00 0.0
1968 77 60 0.00 0.0
1967 89 55 0.00 0.0
1966 89 50 0.00 0.0
1965 68 53 0.00 0.0
1964 90 48 0.00 0.0
1963 85 47 0.00 0.0
1962 70 53 0.00 0.0
1961 98 54 0.00 0.0
1960 82 45 0.00 0.0
1959 78 48 0.00 0.0
1958 86 48 0.00 0.0
1957 n/a 50 0.00 0.0
1956 78 50 0.00 0.0
1955 100 55 0.00 0.0
1954 78 51 0.00 0.0
1953 75 54 0.00 0.0
1952 75 57 0.00 0.0
1951 73 51 0.00 0.0
1950 105 65 0.00 0.0
1949 73 56 0.00 0.0
1948 88 53 0.00 0.0
1947 88 50 0.00 n/a
1946 76 52 0.00 n/a
1945 89 47 0.00 n/a
1944 85 50 0.00 n/a
1943 85 48 0.00 n/a
1942 75 51 0.00 n/a
1941 97 54 0.00 n/a
1940 78 48 0.00 n/a
1939 80 49 0.00 n/a
1938 85 44 0.00 n/a
1937 76 52 0.00 n/a
1936 73 52 0.00 n/a
1935 75 51 0.00 n/a
1934 79 53 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 98 42 0.00 n/a
1931 83 53 0.00 n/a
1930 76 46 0.00 n/a
1929 73 51 0.00 n/a
1928 69 47 0.00 n/a
1927 78 50 0.00 n/a
1926 74 48 0.00 n/a
1925 72 48 0.00 n/a
1924 86 48 0.00 n/a
1923 82 52 0.00 n/a
1922 79 55 0.00 n/a
1921 91 46 0.00 n/a
1920 72 49 0.00 n/a
1919 80 46 0.00 n/a
1918 75 52 0.00 n/a
1917 76 50 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 77 49 0.00 n/a
1913 87 55 0.00 n/a
1912 74 50 0.00 n/a
1911 74 45 0.00 n/a
1910 75 51 0.00 n/a
1909 72 52 n/a n/a
1908 85 53 0.00 n/a
1907 76 59 0.00 n/a
1906 76 58 0.00 n/a
1905 70 56 0.00 n/a
1904 91 53 0.00 n/a
1903 83 49 0.00 n/a
1902 98 55 0.00 n/a
1901 87 43 0.00 n/a
What's the all-time high for Napa on 9/4?
For the date of Sep 4, the highest temperature ever reached in Napa history is 105 °F which happened in 1950.
Highest Temperatures in Napa on September 4
Rank Temperature Year
1 105 °F 1950
2 100 °F 2004
2 100 °F 1955
2 100 °F 2022
5 99 °F 2008
6 98 °F 1902
6 98 °F 1961
6 98 °F 1932
9 97 °F 1941
10 96 °F 1975
10 96 °F 1984
10 96 °F 1983
What's the all-time low for Napa on 9/4?
For the date of Sep 4, the lowest temperature ever reached in Napa history is 42 °F which happened in 1932.
Lowest Temperatures in Napa on September 4
Rank Temperature Year
1 42 °F 1932
2 43 °F 2000
2 43 °F 1901
4 44 °F 1938
4 44 °F 2015
6 45 °F 2016
6 45 °F 1960
6 45 °F 2021
6 45 °F 1911
10 46 °F 1930
10 46 °F 1999
10 46 °F 1919
10 46 °F 1921
Lowest High Temperatures in Napa on September 4
Rank Temperature Year
1 68 °F 1965
2 69 °F 1928
3 70 °F 1905
3 70 °F 2005
3 70 °F 1962
6 72 °F 1920
6 72 °F 1909
6 72 °F 1987
6 72 °F 1925
10 73 °F 1936
10 73 °F 1951
10 73 °F 1929
10 73 °F 2010
10 73 °F 1949
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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