Petaluma October 21 Weather Records

Daily averages and all-time records for weather in Petaluma, California for the date of October 21.
October 21 All-Time Records
1893–2024
Highest temperature 91 °F 1929
Lowest temperature 33 °F 1925
Lowest daily high 57 °F 1918
Highest daily low 67 °F 1923
Most precipitation 0.43 inches 2021
Most snow none -
October 21 Average Weather
1991–2020 1
Average high 75.5 °F
Average low 47.0 °F
Chance precipitation 13.4%
Chance snow 0%
Petaluma October 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 71 47 0.00 n/a
2022 71 49 0.00 n/a
2021 66 58 0.43 n/a
2020 n/a n/a n/a n/a
2019 89 48 0.00 n/a
2018 68 50 0.00 n/a
2017 77 42 0.00 n/a
2016 82 46 0.00 n/a
2015 82 47 0.00 n/a
2014 71 46 0.00 n/a
2013 71 46 0.00 n/a
2012 67 44 0.00 n/a
2011 75 43 0.00 n/a
2010 n/a 54 0.17 0.0
2009 70 57 0.00 0.0
2008 81 43 0.00 0.0
2007 75 46 0.00 0.0
2006 85 46 0.00 0.0
2005 73 47 0.00 0.0
2004 66 41 0.00 0.0
2003 87 47 0.00 0.0
2002 75 42 0.00 0.0
2001 65 50 0.00 0.0
2000 75 47 0.00 0.0
1999 89 44 0.00 0.0
1998 88 43 0.00 0.0
1997 67 50 0.00 0.0
1996 68 36 0.00 0.0
1995 76 47 0.00 0.0
1994 80 40 0.00 0.0
1993 73 45 0.00 0.0
1992 71 57 n/a 0.0
1991 n/a n/a n/a n/a
1990 n/a n/a n/a n/a
1989 66 54 0.06 0.0
1988 68 46 0.00 0.0
1987 75 52 0.00 0.0
1986 77 49 0.00 0.0
1985 65 47 0.02 0.0
1984 69 44 0.00 0.0
1983 85 47 0.00 0.0
1982 71 53 0.03 0.0
1981 76 50 0.00 0.0
1980 84 42 0.00 0.0
1979 69 40 0.00 0.0
1978 74 52 0.00 0.0
1977 73 43 0.00 0.0
1976 80 42 0.00 0.0
1975 79 52 0.00 0.0
1974 82 40 0.00 0.0
1973 69 59 0.01 0.0
1972 66 48 0.00 0.0
1971 75 39 0.00 0.0
1970 63 49 0.00 0.0
1969 79 47 0.00 0.0
1968 75 40 0.00 0.0
1967 68 48 0.00 0.0
1966 69 44 0.00 0.0
1965 79 43 0.00 0.0
1964 90 42 0.00 0.0
1963 72 50 0.00 0.0
1962 76 48 0.00 0.0
1961 67 35 0.00 0.0
1960 73 48 0.00 0.0
1959 75 46 0.00 0.0
1958 80 38 0.00 0.0
1957 70 45 0.00 0.0
1956 82 42 0.00 0.0
1955 69 59 0.00 0.0
1954 90 42 0.00 0.0
1953 71 53 0.00 0.0
1952 72 47 0.00 0.0
1951 71 48 0.00 0.0
1950 81 44 0.00 0.0
1949 72 34 0.00 0.0
1948 82 44 0.00 0.0
1947 67 54 0.00 0.0
1946 70 41 0.02 0.0
1945 71 50 0.00 0.0
1944 71 58 0.27 0.0
1943 68 47 0.01 0.0
1942 90 48 0.00 n/a
1941 66 45 0.00 n/a
1940 76 51 0.00 n/a
1939 88 46 0.00 n/a
1938 83 40 0.00 0.0
1937 90 45 0.00 n/a
1936 66 45 0.00 n/a
1935 77 42 0.00 0.0
1934 68 41 0.23 n/a
1933 87 45 n/a n/a
1932 71 37 0.00 0.0
1931 63 52 0.00 n/a
1930 73 39 0.00 n/a
1929 91 56 n/a n/a
1928 81 51 0.00 n/a
1927 82 46 0.00 n/a
1926 68 53 0.00 n/a
1925 90 33 0.00 n/a
1924 71 52 0.00 n/a
1923 75 67 0.00 n/a
1922 85 38 0.00 n/a
1921 72 n/a 0.03 n/a
1920 70 40 0.00 n/a
1919 85 35 0.00 n/a
1918 57 51 0.00 n/a
1917 89 37 n/a n/a
1916 61 46 0.00 n/a
1915 71 50 0.00 n/a
1914 65 37 0.00 n/a
1913 84 46 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 0.35 n/a
1893 n/a n/a 0.00 n/a
What's the all-time high for Petaluma on 10/21?
For the date of Oct 21, the highest temperature ever reached in Petaluma history is 91 °F which happened in 1929.
Highest Temperatures in Petaluma on October 21
Rank Temperature Year
1 91 °F 1929
2 90 °F 1942
2 90 °F 1925
2 90 °F 1954
2 90 °F 1937
2 90 °F 1964
7 89 °F 1917
7 89 °F 2019
7 89 °F 1999
10 88 °F 1939
10 88 °F 1998
What's the all-time low for Petaluma on 10/21?
For the date of Oct 21, the lowest temperature ever reached in Petaluma history is 33 °F which happened in 1925.
Lowest Temperatures in Petaluma on October 21
Rank Temperature Year
1 33 °F 1925
2 34 °F 1949
3 35 °F 1961
3 35 °F 1919
5 36 °F 1996
6 37 °F 1917
6 37 °F 1914
6 37 °F 1932
9 38 °F 1958
9 38 °F 1922
Lowest High Temperatures in Petaluma on October 21
Rank Temperature Year
1 57 °F 1918
2 61 °F 1916
3 63 °F 1931
3 63 °F 1970
5 65 °F 2001
5 65 °F 1985
5 65 °F 1914
8 66 °F 1936
8 66 °F 1972
8 66 °F 2004
8 66 °F 1941
8 66 °F 2021
8 66 °F 1989
What's the most it has ever rained in Petaluma on 10/21?
For the date of Oct 21, the most precipitation ever recorded in Petaluma history is 0.43 inches which happened in 2021.
All-Time Most Precipitation in Petaluma on October 21
Rank Precipitation Year
1 0.43 inches 2021
2 0.35 inches 1894
3 0.27 inches 1944
4 0.23 inches 1934
5 0.17 inches 2010
6 0.06 inches 1989
7 0.03 inches 1921
7 0.03 inches 1982
9 0.02 inches 1946
9 0.02 inches 1985
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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