Petaluma May 21 Weather Records

Daily averages and all-time records for weather in Petaluma, California for the date of May 21.
May 21 All-Time Records
1893–2024
Highest temperature 92 °F 2000
Lowest temperature 34 °F 1929
Lowest daily high 59 °F 1995
Highest daily low 56 °F 2006
Most precipitation 2.26 inches 1921
Most snow none -
May 21 Average Weather
1991–2020 1
Average high 72.6 °F
Average low 48.3 °F
Chance precipitation 11.3%
Chance snow 0%
Petaluma May 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 51 0.00 n/a
2022 81 44 0.00 n/a
2021 69 45 0.00 n/a
2020 75 47 0.00 n/a
2019 62 52 0.10 n/a
2018 71 45 0.00 n/a
2017 85 48 0.00 n/a
2016 62 47 0.00 n/a
2015 65 52 0.00 n/a
2014 77 48 0.00 n/a
2013 76 49 0.00 n/a
2012 72 42 0.00 n/a
2011 68 45 0.00 n/a
2010 67 44 0.00 0.0
2009 70 43 0.00 0.0
2008 71 46 0.00 0.0
2007 79 49 0.00 0.0
2006 71 56 0.08 0.0
2005 76 46 0.00 0.0
2004 68 49 0.00 0.0
2003 81 48 0.00 0.0
2002 65 47 0.26 0.0
2001 84 51 0.00 0.0
2000 92 52 0.00 0.0
1999 78 45 0.00 0.0
1998 65 n/a 0.00 0.0
1997 75 42 0.00 0.0
1996 65 51 0.04 0.0
1995 59 51 0.00 0.0
1994 66 43 0.00 0.0
1993 70 51 0.00 0.0
1992 79 48 0.00 0.0
1991 80 44 0.00 0.0
1990 74 51 0.02 0.0
1989 66 47 0.00 0.0
1988 91 52 0.00 0.0
1987 70 51 0.00 0.0
1986 67 42 0.00 0.0
1985 83 44 0.00 0.0
1984 82 47 0.00 0.0
1983 78 52 0.00 0.0
1982 75 44 0.00 0.0
1981 70 44 0.00 0.0
1980 72 48 0.00 0.0
1979 68 56 0.00 0.0
1978 63 51 0.00 0.0
1977 72 47 0.00 0.0
1976 77 45 0.00 0.0
1975 77 51 0.00 0.0
1974 71 40 0.00 0.0
1973 72 44 0.00 0.0
1972 67 53 0.00 0.0
1971 70 44 0.00 0.0
1970 80 44 0.00 0.0
1969 70 50 0.00 0.0
1968 69 52 0.00 0.0
1967 87 49 0.00 0.0
1966 69 50 0.00 0.0
1965 n/a n/a 0.00 0.0
1964 78 44 0.00 0.0
1963 61 52 0.00 0.0
1962 77 43 0.00 0.0
1961 61 52 0.00 0.0
1960 64 39 0.00 0.0
1959 84 47 0.00 0.0
1958 79 49 0.00 0.0
1957 69 46 0.10 0.0
1956 74 44 0.00 0.0
1955 79 43 0.00 0.0
1954 78 47 0.00 0.0
1953 65 48 0.25 0.0
1952 78 45 0.00 0.0
1951 67 41 0.00 0.0
1950 79 47 0.00 0.0
1949 69 44 0.00 0.0
1948 70 45 0.00 0.0
1947 72 52 0.00 0.0
1946 60 47 0.00 0.0
1945 66 51 0.00 0.0
1944 81 48 0.00 0.0
1943 89 43 0.00 n/a
1942 89 50 0.00 n/a
1941 86 50 0.00 n/a
1940 72 51 0.00 n/a
1939 66 49 0.30 n/a
1938 66 48 0.00 n/a
1937 78 41 0.00 n/a
1936 80 45 0.00 0.0
1935 80 44 0.00 0.0
1934 85 48 0.00 n/a
1933 70 39 0.00 n/a
1932 70 42 0.00 n/a
1931 85 47 0.00 n/a
1930 71 44 0.00 n/a
1929 60 34 0.00 n/a
1928 64 50 0.00 n/a
1927 n/a n/a n/a n/a
1926 74 49 0.00 n/a
1925 73 43 0.00 n/a
1924 66 51 0.05 n/a
1923 73 45 0.00 n/a
1922 68 38 0.00 n/a
1921 71 56 2.26 n/a
1920 77 54 n/a n/a
1919 75 51 0.00 n/a
1918 72 37 0.00 n/a
1917 69 39 0.00 0.0
1916 67 43 n/a n/a
1915 65 48 0.02 n/a
1914 65 48 0.00 n/a
1913 71 41 0.00 n/a
1912 n/a n/a n/a n/a
1911 n/a n/a n/a n/a
1910 n/a n/a n/a n/a
1909 n/a n/a n/a n/a
1908 n/a n/a n/a n/a
1907 n/a n/a n/a n/a
1906 n/a n/a n/a n/a
1905 n/a n/a n/a n/a
1904 n/a n/a n/a n/a
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 n/a n/a n/a n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 n/a n/a n/a n/a
1895 n/a n/a 0.00 n/a
1894 n/a n/a 0.00 n/a
1893 n/a n/a 0.00 n/a
What's the all-time high for Petaluma on 5/21?
For the date of May 21, the highest temperature ever reached in Petaluma history is 92 °F which happened in 2000.
Highest Temperatures in Petaluma on May 21
Rank Temperature Year
1 92 °F 2000
2 91 °F 1988
3 89 °F 1943
3 89 °F 1942
5 87 °F 1967
6 86 °F 1941
7 85 °F 1931
7 85 °F 1934
7 85 °F 2017
10 84 °F 2001
10 84 °F 1959
What's the all-time low for Petaluma on 5/21?
For the date of May 21, the lowest temperature ever reached in Petaluma history is 34 °F which happened in 1929.
Lowest Temperatures in Petaluma on May 21
Rank Temperature Year
1 34 °F 1929
2 37 °F 1918
3 38 °F 1922
4 39 °F 1933
4 39 °F 1960
4 39 °F 1917
7 40 °F 1974
8 41 °F 1913
8 41 °F 1951
8 41 °F 1937
Lowest High Temperatures in Petaluma on May 21
Rank Temperature Year
1 59 °F 1995
2 60 °F 1929
2 60 °F 1946
4 61 °F 1963
4 61 °F 1961
6 62 °F 2019
6 62 °F 2016
8 63 °F 1978
9 64 °F 1960
9 64 °F 1928
What's the most it has ever rained in Petaluma on 5/21?
For the date of May 21, the most precipitation ever recorded in Petaluma history is 2.26 inches which happened in 1921.
All-Time Most Precipitation in Petaluma on May 21
Rank Precipitation Year
1 2.26 inches 1921
2 0.30 inches 1939
3 0.26 inches 2002
4 0.25 inches 1953
5 0.10 inches 2019
5 0.10 inches 1957
7 0.08 inches 2006
8 0.05 inches 1924
9 0.04 inches 1996
10 0.02 inches 1990
10 0.02 inches 1915
Weather Station Details
Years Station Coordinates
1893–2024 Petaluma Airport location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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