Napa July 21 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of July 21.
July 21 All-Time Records
1901–2024
Highest temperature 107 °F 1917
Lowest temperature 44 °F 1929
Lowest daily high 65 °F 2010
Highest daily low 65 °F 1918
Most precipitation none -
July 21 Average Weather
1991–2020 1
Average high 79.8 °F
Average low 54.1 °F
Chance precipitation 0.3%
Napa July 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 85 55 0.00 n/a
2022 74 52 0.00 n/a
2021 75 53 0.00 n/a
2020 76 56 0.00 n/a
2019 79 52 0.00 n/a
2018 80 58 0.00 n/a
2017 83 50 0.00 n/a
2016 80 50 0.00 n/a
2015 78 56 0.00 n/a
2014 76 59 0.00 n/a
2013 75 54 0.00 0.0
2012 94 52 0.00 n/a
2011 80 57 0.00 n/a
2010 65 52 0.00 n/a
2009 73 51 0.00 n/a
2008 70 52 0.00 n/a
2007 86 55 0.00 n/a
2006 91 62 0.00 n/a
2005 77 56 0.00 n/a
2004 85 58 0.00 n/a
2003 83 60 0.00 n/a
2002 73 56 0.00 n/a
2001 74 48 0.00 n/a
2000 73 54 0.00 n/a
1999 74 53 0.00 n/a
1998 74 55 0.00 0.0
1997 80 55 0.00 0.0
1996 98 58 0.00 0.0
1995 78 57 0.00 0.0
1994 74 56 0.00 0.0
1993 80 52 0.00 0.0
1992 85 54 0.00 0.0
1991 78 53 0.00 0.0
1990 86 56 0.00 0.0
1989 89 55 0.00 0.0
1988 84 56 0.00 0.0
1987 70 55 0.00 0.0
1986 86 56 0.00 0.0
1985 79 56 0.00 0.0
1984 75 60 0.00 0.0
1983 85 48 0.00 0.0
1982 78 52 0.00 0.0
1981 85 54 0.00 0.0
1980 82 50 0.00 0.0
1979 78 60 0.00 0.0
1978 86 53 0.00 0.0
1977 82 55 0.00 0.0
1976 84 52 0.00 0.0
1975 79 56 0.00 0.0
1974 86 56 0.00 0.0
1973 75 49 0.00 0.0
1972 73 59 0.00 0.0
1971 82 54 0.00 0.0
1970 78 53 0.00 0.0
1969 82 55 0.00 0.0
1968 78 54 0.00 0.0
1967 85 54 0.00 0.0
1966 85 53 0.00 0.0
1965 77 52 0.00 0.0
1964 86 56 0.00 0.0
1963 85 49 0.00 0.0
1962 91 52 0.00 0.0
1961 79 55 0.00 0.0
1960 95 55 0.00 0.0
1959 72 52 0.00 0.0
1958 75 52 0.00 0.0
1957 72 53 0.00 0.0
1956 78 54 0.00 0.0
1955 76 50 0.00 0.0
1954 92 50 0.00 0.0
1953 89 55 0.00 0.0
1952 76 54 0.00 0.0
1951 81 50 0.00 0.0
1950 82 50 0.00 0.0
1949 80 50 0.00 0.0
1948 76 51 0.00 0.0
1947 81 46 0.00 n/a
1946 81 46 0.00 n/a
1945 89 50 0.00 n/a
1944 82 55 0.00 n/a
1943 81 48 0.00 n/a
1942 80 50 0.00 n/a
1941 91 56 0.00 n/a
1940 80 49 0.00 n/a
1939 98 52 0.00 n/a
1938 87 54 0.00 n/a
1937 75 55 0.00 n/a
1936 77 58 0.00 n/a
1935 71 49 0.00 n/a
1934 76 51 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 84 49 0.00 n/a
1931 83 55 0.00 n/a
1930 73 49 0.00 n/a
1929 84 44 0.00 n/a
1928 70 51 0.00 n/a
1927 87 52 0.00 n/a
1926 68 53 0.00 n/a
1925 69 56 0.00 n/a
1924 77 51 0.00 n/a
1923 74 49 0.00 n/a
1922 78 47 0.00 n/a
1921 82 47 0.00 n/a
1920 95 46 0.00 n/a
1919 78 54 0.00 n/a
1918 93 65 0.00 n/a
1917 107 50 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 76 59 0.00 n/a
1913 80 59 0.00 n/a
1912 80 52 0.00 n/a
1911 70 51 0.00 0.0
1910 80 54 0.00 0.0
1909 78 54 0.00 n/a
1908 83 54 0.00 n/a
1907 86 56 0.00 n/a
1906 82 56 0.00 n/a
1905 76 55 0.00 n/a
1904 79 53 0.00 n/a
1903 76 47 0.00 n/a
1902 82 58 0.00 n/a
1901 81 46 0.00 n/a
What's the all-time high for Napa on 7/21?
For the date of Jul 21, the highest temperature ever reached in Napa history is 107 °F which happened in 1917.
Highest Temperatures in Napa on July 21
Rank Temperature Year
1 107 °F 1917
2 98 °F 1996
2 98 °F 1939
4 95 °F 1960
4 95 °F 1920
6 94 °F 2012
7 93 °F 1918
8 92 °F 1954
9 91 °F 1941
9 91 °F 2006
9 91 °F 1962
What's the all-time low for Napa on 7/21?
For the date of Jul 21, the lowest temperature ever reached in Napa history is 44 °F which happened in 1929.
Lowest Temperatures in Napa on July 21
Rank Temperature Year
1 44 °F 1929
2 46 °F 1947
2 46 °F 1920
2 46 °F 1901
2 46 °F 1946
6 47 °F 1903
6 47 °F 1921
6 47 °F 1922
9 48 °F 1983
9 48 °F 2001
9 48 °F 1943
Lowest High Temperatures in Napa on July 21
Rank Temperature Year
1 65 °F 2010
2 68 °F 1926
3 69 °F 1925
4 70 °F 1987
4 70 °F 1911
4 70 °F 1928
4 70 °F 2008
8 71 °F 1935
9 72 °F 1959
9 72 °F 1957
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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