Petaluma September 18 Weather Records

Daily averages and all-time records for weather in Petaluma, California for the date of September 18.
September 18 All-Time Records
1893–2024
Highest temperature 106 °F 1913
Lowest temperature 36 °F 1929
Lowest daily high 61 °F 1918
Highest daily low 62 °F 2010
Most precipitation 1.85 inches 1959
Most snow none -
September 18 Average Weather
1991–2020 1
Average high 81.3 °F
Average low 51.6 °F
Chance precipitation 3.7%
Chance snow 0%
Petaluma September 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 73 55 0.00 n/a
2022 64 58 0.48 n/a
2021 67 55 0.04 n/a
2020 74 60 0.00 n/a
2019 74 59 0.03 n/a
2018 74 46 0.00 n/a
2017 76 57 0.00 n/a
2016 96 50 0.00 n/a
2015 83 50 0.00 n/a
2014 80 57 0.14 n/a
2013 81 51 0.00 n/a
2012 70 50 0.00 n/a
2011 90 47 0.00 n/a
2010 73 62 0.00 0.0
2009 97 55 0.00 0.0
2008 69 42 0.00 0.0
2007 78 48 0.00 0.0
2006 86 48 0.00 0.0
2005 79 47 0.00 0.0
2004 75 53 0.00 0.0
2003 90 46 0.00 0.0
2002 92 53 0.00 0.0
2001 76 51 0.00 0.0
2000 99 55 0.00 0.0
1999 71 51 0.00 0.0
1998 78 53 0.00 0.0
1997 78 50 0.00 0.0
1996 82 49 0.00 0.0
1995 94 49 0.00 0.0
1994 73 53 0.00 0.0
1993 75 52 0.00 0.0
1992 76 52 0.00 0.0
1991 n/a n/a n/a n/a
1990 83 51 0.00 0.0
1989 66 55 0.11 0.0
1988 89 45 0.00 0.0
1987 80 51 0.00 0.0
1986 73 51 0.00 0.0
1985 82 43 0.00 0.0
1984 99 55 0.13 0.0
1983 85 54 0.00 0.0
1982 72 53 0.00 0.0
1981 77 51 0.00 0.0
1980 74 53 0.00 0.0
1979 78 55 0.00 0.0
1978 75 49 0.00 0.0
1977 75 58 0.42 0.0
1976 84 50 0.00 0.0
1975 73 54 0.00 0.0
1974 79 53 0.00 0.0
1973 74 50 0.00 0.0
1972 73 49 0.00 0.0
1971 88 55 0.00 0.0
1970 86 53 0.00 0.0
1969 75 61 0.00 0.0
1968 85 56 0.00 0.0
1967 84 58 0.03 0.0
1966 72 60 0.04 0.0
1965 81 39 0.00 0.0
1964 86 47 0.00 0.0
1963 80 53 0.00 0.0
1962 76 53 0.00 0.0
1961 80 52 0.00 0.0
1960 82 48 0.00 0.0
1959 70 58 1.85 0.0
1958 98 48 0.00 0.0
1957 74 55 0.00 0.0
1956 82 59 n/a 0.0
1955 83 48 0.00 0.0
1954 84 41 0.00 0.0
1953 78 60 0.00 0.0
1952 78 54 0.00 0.0
1951 76 54 0.00 0.0
1950 73 54 0.00 0.0
1949 96 49 0.00 0.0
1948 73 59 0.00 0.0
1947 70 42 0.00 0.0
1946 90 50 0.00 0.0
1945 74 57 0.00 0.0
1944 77 45 0.00 0.0
1943 87 44 0.00 0.0
1942 76 51 0.00 n/a
1941 79 51 0.00 n/a
1940 78 50 0.00 n/a
1939 99 52 0.00 n/a
1938 70 53 0.00 n/a
1937 76 45 0.00 n/a
1936 94 45 0.00 n/a
1935 93 50 0.00 0.0
1934 75 49 0.00 n/a
1933 76 44 0.00 n/a
1932 74 52 0.00 n/a
1931 78 56 0.00 n/a
1930 77 55 0.00 n/a
1929 76 36 n/a n/a
1928 87 47 0.00 n/a
1927 76 47 n/a n/a
1926 72 38 0.00 n/a
1925 75 51 0.06 n/a
1924 79 44 0.00 0.0
1923 66 58 0.00 n/a
1922 92 50 n/a n/a
1921 70 60 0.05 n/a
1920 78 55 0.00 n/a
1919 103 49 0.00 n/a
1918 61 56 0.00 n/a
1917 88 46 0.00 n/a
1916 83 41 0.00 n/a
1915 89 42 n/a n/a
1914 76 59 0.02 n/a
1913 106 51 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 9/18?
For the date of Sep 18, the highest temperature ever reached in Petaluma history is 106 °F which happened in 1913.
Highest Temperatures in Petaluma on September 18
Rank Temperature Year
1 106 °F 1913
2 103 °F 1919
3 99 °F 1984
3 99 °F 2000
3 99 °F 1939
6 98 °F 1958
7 97 °F 2009
8 96 °F 1949
8 96 °F 2016
10 94 °F 1936
10 94 °F 1995
What's the all-time low for Petaluma on 9/18?
For the date of Sep 18, the lowest temperature ever reached in Petaluma history is 36 °F which happened in 1929.
Lowest Temperatures in Petaluma on September 18
Rank Temperature Year
1 36 °F 1929
2 38 °F 1926
3 39 °F 1965
4 41 °F 1954
4 41 °F 1916
6 42 °F 1915
6 42 °F 1947
6 42 °F 2008
9 43 °F 1985
10 44 °F 1924
10 44 °F 1943
10 44 °F 1933
Lowest High Temperatures in Petaluma on September 18
Rank Temperature Year
1 61 °F 1918
2 64 °F 2022
3 66 °F 1923
3 66 °F 1989
5 67 °F 2021
6 69 °F 2008
7 70 °F 1938
7 70 °F 2012
7 70 °F 1947
7 70 °F 1959
7 70 °F 1921
What's the most it has ever rained in Petaluma on 9/18?
For the date of Sep 18, the most precipitation ever recorded in Petaluma history is 1.85 inches which happened in 1959.
All-Time Most Precipitation in Petaluma on September 18
Rank Precipitation Year
1 1.85 inches 1959
2 0.48 inches 2022
3 0.42 inches 1977
4 0.14 inches 2014
5 0.13 inches 1984
6 0.11 inches 1989
7 0.06 inches 1925
8 0.05 inches 1921
9 0.04 inches 2021
9 0.04 inches 1966
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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