Napa August 15 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of August 15.
August 15 All-Time Records
1901–2024
Highest temperature 102 °F 2020
Lowest temperature 43 °F 1911
Lowest daily high 65 °F 1935
Highest daily low 65 °F 1983
Most precipitation 0.55 inches 1976
August 15 Average Weather
1991–2020 1
Average high 80.5 °F
Average low 53.9 °F
Chance precipitation 0.7%
Napa August 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 87 61 0.00 n/a
2022 87 59 0.00 n/a
2021 77 55 0.00 n/a
2020 102 62 0.00 n/a
2019 95 56 0.00 n/a
2018 80 56 0.00 n/a
2017 71 55 0.00 n/a
2016 75 52 0.00 n/a
2015 96 51 0.00 n/a
2014 80 53 0.00 n/a
2013 88 52 0.00 0.0
2012 76 56 0.00 n/a
2011 76 47 0.00 n/a
2010 74 49 0.00 n/a
2009 84 49 0.00 n/a
2008 81 54 0.00 n/a
2007 85 51 0.00 n/a
2006 70 54 0.00 n/a
2005 71 54 0.00 n/a
2004 81 48 0.00 n/a
2003 82 49 0.00 n/a
2002 76 55 0.00 n/a
2001 76 55 0.00 n/a
2000 85 47 0.00 n/a
1999 79 57 0.00 n/a
1998 73 56 0.00 0.0
1997 79 56 0.00 0.0
1996 90 51 0.00 0.0
1995 96 60 0.00 0.0
1994 95 52 0.00 0.0
1993 78 55 0.00 0.0
1992 91 60 0.00 0.0
1991 78 57 0.00 0.0
1990 73 55 0.00 0.0
1989 91 54 0.00 0.0
1988 74 55 0.00 0.0
1987 78 55 0.00 0.0
1986 81 57 0.00 0.0
1985 73 55 0.00 0.0
1984 79 46 0.00 0.0
1983 97 65 0.00 0.0
1982 82 50 0.00 0.0
1981 84 51 0.00 0.0
1980 75 54 0.00 0.0
1979 80 51 0.00 0.0
1978 89 54 0.00 0.0
1977 79 53 0.00 0.0
1976 72 54 0.55 0.0
1975 70 49 0.00 0.0
1974 78 56 0.00 0.0
1973 85 50 0.00 0.0
1972 76 51 0.00 0.0
1971 80 53 0.00 0.0
1970 74 53 0.00 0.0
1969 82 49 0.00 0.0
1968 81 54 0.00 0.0
1967 90 58 0.00 0.0
1966 95 53 0.00 0.0
1965 84 56 0.00 0.0
1964 79 53 0.00 0.0
1963 100 54 0.00 0.0
1962 97 52 0.00 0.0
1961 76 52 0.00 0.0
1960 85 51 0.00 0.0
1959 70 50 0.00 0.0
1958 87 53 0.00 0.0
1957 79 54 0.00 0.0
1956 80 47 0.00 0.0
1955 73 50 0.00 0.0
1954 79 49 0.00 0.0
1953 79 48 0.00 0.0
1952 81 54 0.00 0.0
1951 95 52 0.00 0.0
1950 100 52 0.00 0.0
1949 75 50 0.00 0.0
1948 82 50 0.00 0.0
1947 84 53 0.00 n/a
1946 73 53 0.00 n/a
1945 76 51 0.00 n/a
1944 75 50 0.00 n/a
1943 79 52 0.00 n/a
1942 82 57 0.00 n/a
1941 80 50 0.00 n/a
1940 71 52 0.00 n/a
1939 82 48 0.00 n/a
1938 73 52 0.00 n/a
1937 71 50 0.00 n/a
1936 84 50 0.00 n/a
1935 65 50 0.00 n/a
1934 80 51 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 86 45 0.00 n/a
1931 86 52 0.00 n/a
1930 81 51 0.00 n/a
1929 78 53 0.00 n/a
1928 69 48 0.00 n/a
1927 78 47 0.00 n/a
1926 73 51 0.00 n/a
1925 82 50 0.00 n/a
1924 75 53 0.00 n/a
1923 73 49 0.00 n/a
1922 87 54 0.00 n/a
1921 95 52 0.00 n/a
1920 90 53 0.00 n/a
1919 82 49 0.00 n/a
1918 72 55 0.00 n/a
1917 76 49 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 84 50 0.00 n/a
1913 78 51 0.00 n/a
1912 82 57 n/a n/a
1911 74 43 0.00 n/a
1910 90 55 0.00 n/a
1909 81 51 0.00 n/a
1908 77 54 0.00 n/a
1907 82 55 0.00 n/a
1906 102 61 0.00 n/a
1905 84 59 0.00 n/a
1904 78 53 0.00 n/a
1903 83 45 0.00 n/a
1902 82 51 0.00 n/a
1901 82 50 0.00 n/a
What's the all-time high for Napa on 8/15?
For the date of Aug 15, the highest temperature ever reached in Napa history is 102 °F which has happened 2 times, most recently in 2020.
Highest Temperatures in Napa on August 15
Rank Temperature Year
1 102 °F 1906
1 102 °F 2020
3 100 °F 1950
3 100 °F 1963
5 97 °F 1983
5 97 °F 1962
7 96 °F 1995
7 96 °F 2015
9 95 °F 1994
9 95 °F 1951
9 95 °F 1921
9 95 °F 2019
9 95 °F 1966
What's the all-time low for Napa on 8/15?
For the date of Aug 15, the lowest temperature ever reached in Napa history is 43 °F which happened in 1911.
Lowest Temperatures in Napa on August 15
Rank Temperature Year
1 43 °F 1911
2 45 °F 1932
2 45 °F 1903
4 46 °F 1984
5 47 °F 2011
5 47 °F 1956
5 47 °F 1927
5 47 °F 2000
9 48 °F 1953
9 48 °F 1939
9 48 °F 2004
9 48 °F 1928
Lowest High Temperatures in Napa on August 15
Rank Temperature Year
1 65 °F 1935
2 69 °F 1928
3 70 °F 2006
3 70 °F 1959
3 70 °F 1975
6 71 °F 1940
6 71 °F 1937
6 71 °F 2017
6 71 °F 2005
10 72 °F 1918
10 72 °F 1976
What's the most it has ever rained in Napa on 8/15?
For the date of Aug 15, the most precipitation ever recorded in Napa history is 0.55 inches which happened in 1976.
All-Time Most Precipitation in Napa on August 15
Rank Precipitation Year
1 0.55 inches 1976
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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