Petaluma September 20 Weather Records

Daily averages and all-time records for weather in Petaluma, California for the date of September 20.
September 20 All-Time Records
1893–2024
Highest temperature 103 °F 1943
Lowest temperature 33 °F 1929
Lowest daily high 67 °F 1969
Highest daily low 62 °F 1939
Most precipitation 0.11 inches 1973
Most snow none -
September 20 Average Weather
1991–2020 1
Average high 80.8 °F
Average low 51.4 °F
Chance precipitation 4.1%
Chance snow 0%
Petaluma September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 56 0.00 n/a
2022 73 50 0.00 n/a
2021 87 51 0.00 n/a
2020 87 53 0.00 n/a
2019 84 54 0.00 n/a
2018 90 49 0.00 n/a
2017 74 57 0.00 n/a
2016 89 54 0.00 n/a
2015 96 49 0.00 n/a
2014 75 57 0.00 n/a
2013 81 48 0.00 n/a
2012 74 47 0.00 n/a
2011 95 52 0.00 n/a
2010 77 52 0.00 0.0
2009 87 52 0.00 0.0
2008 70 58 0.04 0.0
2007 68 47 0.00 0.0
2006 83 45 0.00 0.0
2005 n/a 50 0.00 0.0
2004 74 43 0.00 0.0
2003 94 48 0.00 0.0
2002 95 51 0.00 0.0
2001 76 53 0.00 0.0
2000 89 56 0.00 0.0
1999 73 58 0.00 0.0
1998 80 53 0.00 0.0
1997 91 53 0.00 0.0
1996 n/a n/a 0.00 0.0
1995 83 49 0.00 0.0
1994 74 54 0.00 0.0
1993 85 44 0.00 0.0
1992 82 47 0.00 0.0
1991 n/a n/a n/a n/a
1990 100 49 0.00 0.0
1989 78 52 0.00 0.0
1988 80 48 0.00 0.0
1987 89 50 0.00 0.0
1986 76 44 0.00 0.0
1985 80 46 0.00 0.0
1984 69 59 0.00 0.0
1983 72 49 0.03 0.0
1982 84 44 0.00 0.0
1981 85 47 0.00 0.0
1980 76 48 0.00 0.0
1979 91 49 0.00 0.0
1978 84 43 0.00 0.0
1977 75 56 0.00 0.0
1976 72 56 0.00 0.0
1975 85 47 0.00 0.0
1974 84 53 0.00 0.0
1973 77 59 0.11 0.0
1972 86 47 0.00 0.0
1971 83 50 0.00 0.0
1970 74 49 0.00 0.0
1969 67 57 0.00 0.0
1968 73 47 0.00 0.0
1967 100 55 0.00 0.0
1966 78 52 0.00 0.0
1965 83 43 0.00 0.0
1964 98 54 0.00 0.0
1963 74 56 0.00 0.0
1962 83 42 0.00 0.0
1961 80 54 0.00 0.0
1960 82 48 0.00 0.0
1959 76 52 0.00 0.0
1958 95 49 0.00 0.0
1957 88 46 0.00 0.0
1956 80 48 0.00 0.0
1955 77 49 0.00 0.0
1954 90 43 0.00 0.0
1953 71 53 0.00 0.0
1952 78 55 0.00 0.0
1951 76 53 0.00 0.0
1950 89 48 0.00 0.0
1949 99 49 0.00 0.0
1948 76 50 0.00 0.0
1947 95 44 0.00 0.0
1946 90 55 0.00 0.0
1945 68 57 0.00 0.0
1944 74 48 0.00 0.0
1943 103 52 0.00 0.0
1942 74 51 0.00 n/a
1941 72 46 0.00 n/a
1940 88 45 0.00 n/a
1939 102 62 0.00 n/a
1938 70 51 0.00 n/a
1937 90 48 0.00 n/a
1936 87 46 0.00 n/a
1935 77 51 0.00 0.0
1934 74 50 0.00 n/a
1933 74 49 0.00 n/a
1932 76 45 0.00 n/a
1931 96 60 0.00 n/a
1930 70 51 0.00 n/a
1929 70 33 n/a n/a
1928 100 48 0.00 n/a
1927 71 45 n/a n/a
1926 70 43 0.10 n/a
1925 81 52 0.00 n/a
1924 77 42 0.00 0.0
1923 79 58 0.00 n/a
1922 79 52 n/a n/a
1921 85 52 0.00 n/a
1920 73 56 0.00 n/a
1919 94 48 0.00 n/a
1918 71 57 0.00 n/a
1917 71 45 0.00 n/a
1916 78 46 0.00 n/a
1915 70 47 n/a n/a
1914 80 41 0.00 n/a
1913 79 56 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 n/a n/a
What's the all-time high for Petaluma on 9/20?
For the date of Sep 20, the highest temperature ever reached in Petaluma history is 103 °F which happened in 1943.
Highest Temperatures in Petaluma on September 20
Rank Temperature Year
1 103 °F 1943
2 102 °F 1939
3 100 °F 1928
3 100 °F 1990
3 100 °F 1967
6 99 °F 1949
7 98 °F 1964
8 96 °F 1931
8 96 °F 2015
10 95 °F 1958
10 95 °F 1947
10 95 °F 2011
10 95 °F 2002
What's the all-time low for Petaluma on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Petaluma history is 33 °F which happened in 1929.
Lowest Temperatures in Petaluma on September 20
Rank Temperature Year
1 33 °F 1929
2 41 °F 1914
3 42 °F 1924
3 42 °F 1962
5 43 °F 2004
5 43 °F 1978
5 43 °F 1926
5 43 °F 1965
5 43 °F 1954
10 44 °F 1986
10 44 °F 1993
10 44 °F 1982
10 44 °F 1947
Lowest High Temperatures in Petaluma on September 20
Rank Temperature Year
1 67 °F 1969
2 68 °F 2007
2 68 °F 1945
4 69 °F 1984
5 70 °F 1929
5 70 °F 1915
5 70 °F 1930
5 70 °F 2008
5 70 °F 1926
5 70 °F 1938
What's the most it has ever rained in Petaluma on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Petaluma history is 0.11 inches which happened in 1973.
All-Time Most Precipitation in Petaluma on September 20
Rank Precipitation Year
1 0.11 inches 1973
2 0.10 inches 1926
3 0.04 inches 2008
4 0.03 inches 1983
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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