Napa April 20 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of April 20.
April 20 All-Time Records
1901–2024
Highest temperature 94 °F 1931
Lowest temperature 29 °F 1929
Lowest daily high 53 °F 1963
Highest daily low 63 °F 1907
Most precipitation 0.97 inches 1988
April 20 Average Weather
1991–2020 1
Average high 69.6 °F
Average low 43.7 °F
Chance precipitation 21.0%
Napa April 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 72 50 0.00 n/a
2023 69 39 0.00 n/a
2022 66 42 0.17 n/a
2021 70 42 0.00 n/a
2020 67 47 0.00 n/a
2019 67 48 0.00 n/a
2018 73 39 0.00 n/a
2017 71 48 0.00 n/a
2016 71 41 0.00 n/a
2015 66 51 0.00 n/a
2014 78 41 0.00 n/a
2013 80 42 0.00 n/a
2012 84 51 0.00 n/a
2011 61 51 0.01 n/a
2010 60 46 0.35 n/a
2009 90 45 0.00 n/a
2008 59 33 0.00 n/a
2007 66 43 0.11 n/a
2006 69 44 0.00 n/a
2005 65 45 0.00 n/a
2004 65 54 0.01 n/a
2003 63 42 0.00 n/a
2002 63 35 0.00 n/a
2001 56 34 0.21 n/a
2000 72 45 0.00 n/a
1999 69 46 0.00 n/a
1998 77 47 0.00 0.0
1997 72 58 0.01 0.0
1996 61 37 0.02 0.0
1995 65 49 0.16 0.0
1994 73 43 0.00 0.0
1993 72 44 0.00 0.0
1992 83 52 0.00 0.0
1991 67 39 0.08 0.0
1990 65 53 0.02 0.0
1989 74 52 0.00 0.0
1988 65 48 0.97 0.0
1987 83 44 0.00 0.0
1986 85 44 0.00 0.0
1985 60 47 0.00 0.0
1984 72 37 0.00 0.0
1983 69 52 0.11 0.0
1982 80 47 0.00 0.0
1981 70 44 0.00 0.0
1980 68 52 0.21 0.0
1979 71 39 0.00 0.0
1978 66 44 0.03 0.0
1977 86 42 0.00 0.0
1976 80 40 0.00 0.0
1975 70 46 0.00 0.0
1974 73 42 0.00 0.0
1973 70 49 0.00 0.0
1972 67 39 0.00 0.0
1971 62 44 0.00 0.0
1970 65 36 0.00 0.0
1969 78 42 0.00 0.0
1968 68 36 0.00 0.0
1967 61 33 0.01 0.0
1966 68 37 0.00 0.0
1965 69 54 0.07 0.0
1964 64 45 0.00 0.0
1963 53 33 0.61 0.0
1962 71 36 0.00 0.0
1961 65 34 0.00 0.0
1960 74 42 0.00 0.0
1959 68 43 0.00 0.0
1958 82 48 0.00 0.0
1957 58 46 0.00 0.0
1956 80 47 0.00 0.0
1955 54 46 0.28 0.0
1954 75 47 0.00 0.0
1953 70 48 0.16 0.0
1952 82 56 0.00 0.0
1951 64 46 0.00 0.0
1950 86 49 0.00 0.0
1949 81 35 0.00 0.0
1948 64 44 0.00 n/a
1947 75 45 0.00 n/a
1946 72 35 0.00 n/a
1945 79 45 0.00 n/a
1944 59 36 0.01 n/a
1943 69 42 0.00 n/a
1942 74 49 0.00 n/a
1941 80 38 0.00 n/a
1940 77 40 0.00 n/a
1939 72 45 0.00 n/a
1938 74 45 0.00 n/a
1937 77 44 0.00 n/a
1936 63 45 0.00 n/a
1935 68 43 0.00 n/a
1934 77 47 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 71 36 0.03 n/a
1931 94 45 0.00 n/a
1930 79 44 0.00 n/a
1929 68 29 0.00 n/a
1928 64 41 0.00 n/a
1927 75 38 0.00 n/a
1926 79 41 0.00 n/a
1925 56 45 0.13 n/a
1924 64 41 0.00 n/a
1923 63 44 0.00 n/a
1922 68 39 0.00 n/a
1921 72 47 0.00 n/a
1920 65 33 0.00 n/a
1919 73 36 0.00 n/a
1918 80 41 0.00 n/a
1917 68 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 53 0.00 n/a
1913 56 50 0.00 n/a
1912 62 39 0.00 n/a
1911 75 48 0.00 0.0
1910 90 45 0.00 0.0
1909 72 40 0.00 n/a
1908 67 50 0.00 n/a
1907 85 63 0.00 n/a
1906 85 52 0.00 n/a
1905 62 42 0.16 n/a
1904 61 44 n/a n/a
1903 64 47 n/a n/a
1902 60 40 0.00 n/a
1901 n/a n/a n/a n/a
What's the all-time high for Napa on 4/20?
For the date of Apr 20, the highest temperature ever reached in Napa history is 94 °F which happened in 1931.
Highest Temperatures in Napa on April 20
Rank Temperature Year
1 94 °F 1931
2 90 °F 1910
2 90 °F 2009
4 86 °F 1950
4 86 °F 1977
6 85 °F 1907
6 85 °F 1906
6 85 °F 1986
9 84 °F 2012
10 83 °F 1987
10 83 °F 1992
What's the all-time low for Napa on 4/20?
For the date of Apr 20, the lowest temperature ever reached in Napa history is 29 °F which happened in 1929.
Lowest Temperatures in Napa on April 20
Rank Temperature Year
1 29 °F 1929
2 33 °F 1920
2 33 °F 2008
2 33 °F 1967
2 33 °F 1963
6 34 °F 1961
6 34 °F 2001
8 35 °F 1949
8 35 °F 2002
8 35 °F 1946
Lowest High Temperatures in Napa on April 20
Rank Temperature Year
1 53 °F 1963
2 54 °F 1955
3 56 °F 2001
3 56 °F 1913
3 56 °F 1925
6 58 °F 1957
7 59 °F 2008
7 59 °F 1944
9 60 °F 1985
9 60 °F 1902
9 60 °F 2010
What's the most it has ever rained in Napa on 4/20?
For the date of Apr 20, the most precipitation ever recorded in Napa history is 0.97 inches which happened in 1988.
All-Time Most Precipitation in Napa on April 20
Rank Precipitation Year
1 0.97 inches 1988
2 0.61 inches 1963
3 0.35 inches 2010
4 0.28 inches 1955
5 0.21 inches 1980
5 0.21 inches 2001
7 0.17 inches 2022
8 0.16 inches 1953
8 0.16 inches 1995
8 0.16 inches 1905
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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