Napa May 21 Weather Records

Daily averages and all-time records for weather in Napa, California for the date of May 21.
May 21 All-Time Records
1901–2024
Highest temperature 97 °F 1904
Lowest temperature 37 °F 2021
Lowest daily high 62 °F 1963
Highest daily low 56 °F 1963
Most precipitation 0.73 inches 1939
May 21 Average Weather
1991–2020 1
Average high 74.0 °F
Average low 48.2 °F
Chance precipitation 10.5%
Napa May 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 55 0.00 n/a
2022 79 43 0.00 n/a
2021 74 37 0.00 n/a
2020 78 45 0.00 n/a
2019 64 50 0.10 n/a
2018 n/a n/a 0.00 n/a
2017 87 49 0.00 n/a
2016 65 46 0.02 n/a
2015 70 52 0.00 n/a
2014 73 52 0.00 n/a
2013 75 50 0.00 n/a
2012 73 48 0.00 n/a
2011 70 48 0.00 n/a
2010 64 42 0.00 n/a
2009 74 45 0.00 n/a
2008 77 39 0.00 n/a
2007 84 45 0.00 n/a
2006 68 55 0.36 n/a
2005 78 41 0.00 n/a
2004 69 49 0.00 n/a
2003 83 50 0.00 n/a
2002 64 46 0.06 n/a
2001 89 51 0.00 n/a
2000 96 53 0.00 n/a
1999 73 41 0.00 n/a
1998 71 43 0.00 0.0
1997 78 47 0.00 0.0
1996 68 51 0.26 0.0
1995 67 53 0.00 0.0
1994 71 46 0.00 0.0
1993 74 51 0.00 0.0
1992 85 49 0.00 0.0
1991 71 51 0.00 0.0
1990 67 53 0.00 0.0
1989 68 45 0.00 0.0
1988 94 55 0.00 0.0
1987 69 51 0.00 0.0
1986 70 42 0.00 0.0
1985 81 49 0.00 0.0
1984 80 52 0.00 0.0
1983 78 49 0.00 0.0
1982 70 51 0.00 0.0
1981 72 46 0.00 0.0
1980 83 49 0.00 0.0
1979 n/a n/a n/a n/a
1978 71 50 0.00 0.0
1977 73 51 0.00 0.0
1976 73 42 0.00 0.0
1975 82 45 0.00 0.0
1974 75 40 0.00 0.0
1973 70 49 0.00 0.0
1972 71 52 0.12 0.0
1971 75 46 0.00 0.0
1970 88 46 0.00 0.0
1969 77 52 0.00 0.0
1968 71 51 0.00 0.0
1967 89 52 0.00 0.0
1966 68 51 0.00 0.0
1965 68 47 0.00 0.0
1964 77 43 0.00 0.0
1963 62 56 0.00 0.0
1962 78 42 0.00 0.0
1961 67 49 0.00 0.0
1960 67 38 0.00 0.0
1959 85 54 0.00 0.0
1958 76 49 0.00 0.0
1957 73 43 0.52 0.0
1956 79 52 0.00 0.0
1955 73 51 0.00 0.0
1954 78 48 0.00 0.0
1953 67 47 0.24 0.0
1952 80 44 0.00 0.0
1951 69 49 0.00 0.0
1950 89 50 0.00 0.0
1949 74 41 0.00 0.0
1948 72 47 0.07 n/a
1947 n/a n/a 0.00 n/a
1946 66 40 0.00 n/a
1945 72 50 0.00 n/a
1944 78 50 0.00 n/a
1943 88 46 0.00 n/a
1942 92 52 0.00 n/a
1941 90 51 0.00 n/a
1940 78 50 0.00 n/a
1939 65 48 0.73 n/a
1938 73 47 0.00 n/a
1937 76 43 0.00 n/a
1936 87 47 0.00 n/a
1935 90 52 0.00 n/a
1934 86 49 0.00 n/a
1933 n/a n/a 0.00 n/a
1932 71 44 0.00 n/a
1931 79 50 0.00 n/a
1930 74 37 0.00 n/a
1929 69 45 0.00 n/a
1928 63 48 0.00 n/a
1927 68 39 0.05 n/a
1926 77 48 0.00 n/a
1925 67 52 0.00 n/a
1924 62 50 0.00 n/a
1923 70 48 0.00 n/a
1922 74 38 0.00 n/a
1921 73 50 0.31 n/a
1920 75 41 0.00 n/a
1919 74 52 0.00 n/a
1918 71 44 0.00 n/a
1917 76 40 0.00 n/a
1916 n/a n/a 0.00 n/a
1915 n/a n/a n/a n/a
1914 70 50 0.00 n/a
1913 70 51 0.00 n/a
1912 63 51 0.19 n/a
1911 87 49 0.00 0.0
1910 68 52 0.00 0.0
1909 66 44 0.00 n/a
1908 78 50 0.00 n/a
1907 64 45 0.00 n/a
1906 71 47 n/a n/a
1905 71 44 n/a n/a
1904 97 50 0.00 n/a
1903 70 47 0.00 n/a
1902 68 49 0.00 n/a
1901 71 44 0.48 n/a
What's the all-time high for Napa on 5/21?
For the date of May 21, the highest temperature ever reached in Napa history is 97 °F which happened in 1904.
Highest Temperatures in Napa on May 21
Rank Temperature Year
1 97 °F 1904
2 96 °F 2000
3 94 °F 1988
4 92 °F 1942
5 90 °F 1941
5 90 °F 1935
7 89 °F 1967
7 89 °F 1950
7 89 °F 2001
10 88 °F 1943
10 88 °F 1970
What's the all-time low for Napa on 5/21?
For the date of May 21, the lowest temperature ever reached in Napa history is 37 °F which has happened 2 times, most recently in 2021.
Lowest Temperatures in Napa on May 21
Rank Temperature Year
1 37 °F 1930
1 37 °F 2021
3 38 °F 1960
3 38 °F 1922
5 39 °F 1927
5 39 °F 2008
7 40 °F 1946
7 40 °F 1917
7 40 °F 1974
10 41 °F 1999
10 41 °F 2005
10 41 °F 1920
10 41 °F 1949
Lowest High Temperatures in Napa on May 21
Rank Temperature Year
1 62 °F 1963
1 62 °F 1924
3 63 °F 1928
3 63 °F 1912
5 64 °F 2019
5 64 °F 2002
5 64 °F 2010
5 64 °F 1907
9 65 °F 1939
9 65 °F 2016
What's the most it has ever rained in Napa on 5/21?
For the date of May 21, the most precipitation ever recorded in Napa history is 0.73 inches which happened in 1939.
All-Time Most Precipitation in Napa on May 21
Rank Precipitation Year
1 0.73 inches 1939
2 0.52 inches 1957
3 0.48 inches 1901
4 0.36 inches 2006
5 0.31 inches 1921
6 0.26 inches 1996
7 0.24 inches 1953
8 0.19 inches 1912
9 0.12 inches 1972
10 0.10 inches 2019
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy