Petaluma August 21 Weather Records

Daily averages and all-time records for weather in Petaluma, California for the date of August 21.
August 21 All-Time Records
1893–2024
Highest temperature 97 °F 1969
Lowest temperature 42 °F 1937
Lowest daily high 68 °F 1968
Highest daily low 62 °F 1923
Most precipitation 0.49 inches 1968
Most snow none -
August 21 Average Weather
1991–2020 1
Average high 82.0 °F
Average low 53.1 °F
Chance precipitation 1.3%
Chance snow 0%
Petaluma August 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 88 60 0.00 n/a
2022 84 55 0.00 n/a
2021 70 54 0.00 n/a
2020 87 52 0.00 n/a
2019 90 52 0.00 n/a
2018 72 54 0.00 n/a
2017 79 61 0.00 n/a
2016 73 55 0.00 n/a
2015 76 58 0.00 n/a
2014 80 57 0.00 n/a
2013 84 58 0.00 n/a
2012 82 51 0.00 n/a
2011 73 55 0.00 n/a
2010 71 52 0.00 0.0
2009 92 53 0.00 0.0
2008 82 57 0.00 0.0
2007 91 55 0.00 0.0
2006 74 53 0.00 0.0
2005 74 53 0.00 0.0
2004 85 58 0.00 0.0
2003 81 60 0.00 0.0
2002 78 49 0.00 0.0
2001 77 48 0.00 0.0
2000 83 49 0.00 0.0
1999 87 51 0.00 0.0
1998 80 49 0.00 0.0
1997 83 55 0.00 0.0
1996 79 50 0.00 0.0
1995 72 57 0.00 0.0
1994 80 48 0.00 0.0
1993 88 51 0.00 0.0
1992 75 50 0.00 0.0
1991 n/a n/a 0.00 0.0
1990 n/a n/a n/a n/a
1989 72 55 0.00 0.0
1988 76 58 0.00 0.0
1987 76 n/a 0.00 0.0
1986 81 52 0.00 0.0
1985 80 47 0.00 0.0
1984 78 54 0.00 0.0
1983 80 57 0.00 0.0
1982 94 47 0.00 0.0
1981 87 48 0.00 0.0
1980 74 52 0.00 0.0
1979 77 50 0.00 0.0
1978 73 52 0.00 0.0
1977 88 50 0.00 0.0
1976 83 60 0.00 0.0
1975 83 52 0.00 0.0
1974 95 50 0.00 0.0
1973 80 48 0.00 0.0
1972 88 55 0.00 0.0
1971 78 56 0.00 0.0
1970 79 50 0.00 0.0
1969 97 51 0.00 0.0
1968 68 56 0.49 0.0
1967 n/a 48 0.00 0.0
1966 75 53 0.00 0.0
1965 82 51 0.00 0.0
1964 86 54 0.00 0.0
1963 89 50 0.00 0.0
1962 86 50 0.00 0.0
1961 79 59 0.00 0.0
1960 77 45 0.00 0.0
1959 83 47 0.00 0.0
1958 84 53 0.00 0.0
1957 86 50 0.00 0.0
1956 81 55 0.00 0.0
1955 81 49 0.00 0.0
1954 85 48 0.00 0.0
1953 84 50 0.00 0.0
1952 88 50 0.00 0.0
1951 74 57 0.00 0.0
1950 79 53 0.00 0.0
1949 88 50 0.00 0.0
1948 89 52 0.00 0.0
1947 72 52 0.00 0.0
1946 75 52 0.00 0.0
1945 91 51 0.00 0.0
1944 81 51 0.00 0.0
1943 79 53 0.00 n/a
1942 83 54 0.00 n/a
1941 78 54 0.00 n/a
1940 78 49 0.00 n/a
1939 80 55 0.00 n/a
1938 70 53 0.00 0.0
1937 83 42 0.00 n/a
1936 75 49 0.00 n/a
1935 85 47 0.00 0.0
1934 75 51 0.00 n/a
1933 85 45 0.00 n/a
1932 88 45 0.00 n/a
1931 86 49 0.00 n/a
1930 82 48 0.00 n/a
1929 83 50 0.00 n/a
1928 85 45 0.00 n/a
1927 n/a n/a n/a n/a
1926 74 45 0.00 n/a
1925 75 52 0.00 n/a
1924 84 49 n/a n/a
1923 82 62 0.00 n/a
1922 72 53 0.00 n/a
1921 82 n/a n/a n/a
1920 79 53 n/a n/a
1919 73 51 n/a n/a
1918 70 49 0.00 n/a
1917 92 47 n/a n/a
1916 85 45 0.00 n/a
1915 74 53 n/a n/a
1914 85 46 n/a n/a
1913 79 57 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 n/a n/a
1894 n/a n/a n/a n/a
1893 n/a n/a n/a n/a
What's the all-time high for Petaluma on 8/21?
For the date of Aug 21, the highest temperature ever reached in Petaluma history is 97 °F which happened in 1969.
Highest Temperatures in Petaluma on August 21
Rank Temperature Year
1 97 °F 1969
2 95 °F 1974
3 94 °F 1982
4 92 °F 1917
4 92 °F 2009
6 91 °F 2007
6 91 °F 1945
8 90 °F 2019
9 89 °F 1948
9 89 °F 1963
What's the all-time low for Petaluma on 8/21?
For the date of Aug 21, the lowest temperature ever reached in Petaluma history is 42 °F which happened in 1937.
Lowest Temperatures in Petaluma on August 21
Rank Temperature Year
1 42 °F 1937
2 45 °F 1932
2 45 °F 1960
2 45 °F 1928
2 45 °F 1916
2 45 °F 1926
2 45 °F 1933
8 46 °F 1914
9 47 °F 1935
9 47 °F 1985
9 47 °F 1959
9 47 °F 1917
9 47 °F 1982
Lowest High Temperatures in Petaluma on August 21
Rank Temperature Year
1 68 °F 1968
2 70 °F 1918
2 70 °F 2021
2 70 °F 1938
5 71 °F 2010
6 72 °F 1995
6 72 °F 1989
6 72 °F 1922
6 72 °F 1947
6 72 °F 2018
What's the most it has ever rained in Petaluma on 8/21?
For the date of Aug 21, the most precipitation ever recorded in Petaluma history is 0.49 inches which happened in 1968.
All-Time Most Precipitation in Petaluma on August 21
Rank Precipitation Year
1 0.49 inches 1968
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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