Napa April 15 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of April 15.
April 15 All-Time Records
1901–2024
Highest temperature 90 °F 1947
Lowest temperature 30 °F 2009
Lowest daily high 56 °F 1951
Highest daily low 59 °F 1914
Most precipitation 1.50 inches 1978
April 15 Average Weather
1991–2020 1
Average high 68.4 °F
Average low 43.1 °F
Chance precipitation 22.0%
Napa April 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 65 41 0.00 n/a
2023 66 43 0.00 n/a
2022 63 40 0.00 n/a
2021 69 40 0.00 n/a
2020 77 42 0.00 n/a
2019 61 43 0.12 n/a
2018 64 41 0.16 n/a
2017 68 38 0.00 n/a
2016 74 36 0.00 n/a
2015 76 35 0.00 n/a
2014 68 47 0.00 n/a
2013 63 42 0.00 n/a
2012 65 47 0.00 n/a
2011 68 47 0.00 n/a
2010 68 37 0.00 n/a
2009 62 30 0.00 n/a
2008 64 36 0.00 n/a
2007 75 35 0.00 n/a
2006 59 51 0.01 n/a
2005 71 34 0.00 n/a
2004 61 37 0.00 n/a
2003 59 33 0.00 n/a
2002 62 40 0.00 n/a
2001 63 31 0.00 n/a
2000 63 51 0.00 n/a
1999 82 47 0.00 n/a
1998 64 35 0.04 0.0
1997 83 48 0.00 0.0
1996 75 51 0.16 0.0
1995 63 38 0.21 0.0
1994 80 47 0.00 0.0
1993 65 52 0.00 0.0
1992 66 46 0.00 0.0
1991 63 42 0.00 0.0
1990 70 55 0.00 0.0
1989 70 50 0.00 0.0
1988 66 46 0.00 0.0
1987 87 46 0.00 0.0
1986 60 49 0.04 0.0
1985 65 51 0.00 0.0
1984 85 51 0.00 0.0
1983 72 39 0.00 0.0
1982 65 36 0.00 0.0
1981 71 43 0.00 0.0
1980 76 44 0.00 0.0
1979 72 45 0.00 0.0
1978 59 48 1.50 0.0
1977 79 42 0.00 0.0
1976 67 43 0.00 0.0
1975 60 34 0.00 0.0
1974 76 41 0.00 0.0
1973 66 45 0.00 0.0
1972 78 42 0.00 0.0
1971 70 45 0.00 0.0
1970 61 35 0.00 0.0
1969 75 39 0.00 0.0
1968 71 41 0.00 0.0
1967 59 39 0.21 0.0
1966 88 47 0.00 0.0
1965 62 53 0.25 0.0
1964 87 47 0.00 0.0
1963 60 43 0.22 0.0
1962 72 47 0.00 0.0
1961 84 44 0.00 0.0
1960 70 40 0.00 0.0
1959 75 36 0.00 0.0
1958 80 44 0.00 0.0
1957 68 42 0.00 0.0
1956 57 49 0.00 0.0
1955 67 33 0.00 0.0
1954 82 44 0.00 0.0
1953 72 40 0.00 0.0
1952 72 39 0.00 0.0
1951 56 48 0.00 0.0
1950 74 40 0.00 0.0
1949 66 50 0.00 0.0
1948 68 50 0.28 n/a
1947 90 48 0.00 n/a
1946 67 48 0.00 n/a
1945 78 43 0.00 n/a
1944 65 42 0.00 n/a
1943 67 49 0.00 n/a
1942 69 38 0.00 n/a
1941 70 52 0.00 n/a
1940 74 41 0.00 n/a
1939 73 43 0.00 n/a
1938 66 37 0.00 n/a
1937 66 49 0.00 n/a
1936 62 47 0.00 n/a
1935 60 51 0.50 n/a
1934 73 43 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 76 36 0.00 n/a
1931 81 38 0.00 n/a
1930 71 38 0.00 n/a
1929 70 38 0.00 n/a
1928 63 45 0.00 n/a
1927 61 46 0.00 n/a
1926 71 47 0.00 n/a
1925 72 55 0.00 n/a
1924 62 39 0.00 n/a
1923 79 47 0.00 n/a
1922 66 31 0.00 n/a
1921 61 30 0.00 n/a
1920 65 38 0.43 n/a
1919 71 40 0.00 n/a
1918 69 38 0.00 n/a
1917 65 38 0.00 n/a
1916 n/a n/a n/a n/a
1915 n/a n/a n/a n/a
1914 61 59 0.00 n/a
1913 62 48 0.00 n/a
1912 65 43 0.00 n/a
1911 72 37 0.00 0.0
1910 73 45 0.00 0.0
1909 69 51 0.00 n/a
1908 60 49 0.00 n/a
1907 60 53 0.00 n/a
1906 63 47 0.00 n/a
1905 56 46 n/a n/a
1904 61 42 0.23 n/a
1903 64 41 0.11 n/a
1902 75 45 0.00 n/a
1901 n/a n/a n/a n/a
What's the all-time high for Napa on 4/15?
For the date of Apr 15, the highest temperature ever reached in Napa history is 90 °F which happened in 1947.
Highest Temperatures in Napa on April 15
Rank Temperature Year
1 90 °F 1947
2 88 °F 1966
3 87 °F 1964
3 87 °F 1987
5 85 °F 1984
6 84 °F 1961
7 83 °F 1997
8 82 °F 1999
8 82 °F 1954
10 81 °F 1931
What's the all-time low for Napa on 4/15?
For the date of Apr 15, the lowest temperature ever reached in Napa history is 30 °F which has happened 2 times, most recently in 2009.
Lowest Temperatures in Napa on April 15
Rank Temperature Year
1 30 °F 2009
1 30 °F 1921
3 31 °F 2001
3 31 °F 1922
5 33 °F 2003
5 33 °F 1955
7 34 °F 2005
7 34 °F 1975
9 35 °F 1998
9 35 °F 2015
9 35 °F 1970
9 35 °F 2007
Lowest High Temperatures in Napa on April 15
Rank Temperature Year
1 56 °F 1905
1 56 °F 1951
3 57 °F 1956
4 59 °F 2006
4 59 °F 1978
4 59 °F 2003
4 59 °F 1967
8 60 °F 1963
8 60 °F 1908
8 60 °F 1975
8 60 °F 1935
8 60 °F 1907
8 60 °F 1986
What's the most it has ever rained in Napa on 4/15?
For the date of Apr 15, the most precipitation ever recorded in Napa history is 1.50 inches which happened in 1978.
All-Time Most Precipitation in Napa on April 15
Rank Precipitation Year
1 1.50 inches 1978
2 0.50 inches 1935
3 0.43 inches 1920
4 0.28 inches 1948
5 0.25 inches 1965
6 0.23 inches 1904
7 0.22 inches 1963
8 0.21 inches 1967
8 0.21 inches 1995
10 0.16 inches 1996
10 0.16 inches 2018
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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