Seattle September 23 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of September 23.
September 23 All-Time Records
1894–2024
Highest temperature 85 °F 1940
Lowest temperature 40 °F 1948
Lowest daily high 50 °F 1933
Highest daily low 63 °F 2011
Most precipitation 1.22 inches 1933
Most snow none -
September 23 Average Weather
1991–2020 1
Average high 68.3 °F
Average low 51.7 °F
Chance precipitation 31.1%
Chance snow 0%
Seattle September 23 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 64 54 0.15 0.0
2022 69 55 0.00 0.0
2021 69 54 0.00 0.0
2020 63 58 1.08 0.0
2019 62 56 0.12 0.0
2018 65 53 0.00 0.0
2017 68 54 0.00 0.0
2016 63 53 0.01 0.0
2015 69 47 0.00 0.0
2014 66 58 0.72 0.0
2013 61 52 0.11 0.0
2012 67 50 0.00 0.0
2011 80 63 0.00 0.0
2010 58 52 0.26 0.0
2009 81 55 0.00 0.0
2008 61 43 0.00 n/a
2007 63 47 0.00 n/a
2006 70 47 0.00 n/a
2005 64 48 0.00 n/a
2004 65 52 0.00 n/a
2003 71 56 0.00 n/a
2002 75 50 0.00 n/a
2001 75 53 0.00 n/a
2000 71 45 0.00 n/a
1999 59 50 0.07 n/a
1998 76 51 0.00 n/a
1997 78 52 0.00 n/a
1996 65 44 0.00 0.0
1995 80 49 0.00 0.0
1994 81 55 0.00 0.0
1993 69 46 0.00 0.0
1992 63 53 0.65 0.0
1991 73 51 0.00 0.0
1990 70 53 0.00 0.0
1989 82 54 0.00 0.0
1988 63 48 0.01 0.0
1987 79 55 0.00 0.0
1986 59 49 0.59 0.0
1985 65 47 0.00 0.0
1984 61 47 0.00 0.0
1983 71 53 0.00 0.0
1982 76 55 0.00 0.0
1981 62 47 0.04 0.0
1980 62 50 0.00 0.0
1979 67 49 0.00 0.0
1978 64 54 0.71 0.0
1977 61 51 0.63 0.0
1976 64 57 0.01 0.0
1975 66 54 0.00 0.0
1974 81 51 0.00 0.0
1973 63 54 0.20 0.0
1972 53 43 0.00 0.0
1971 65 49 0.00 0.0
1970 59 46 0.00 0.0
1969 63 54 0.44 0.0
1968 66 55 0.01 0.0
1967 73 51 0.00 0.0
1966 68 57 0.00 0.0
1965 78 53 0.00 0.0
1964 70 52 0.00 0.0
1963 61 49 0.03 0.0
1962 65 52 0.00 0.0
1961 66 42 0.00 0.0
1960 63 51 0.00 0.0
1959 66 44 0.00 0.0
1958 57 41 0.00 0.0
1957 83 48 0.00 0.0
1956 69 43 0.03 0.0
1955 65 46 0.00 0.0
1954 69 54 0.00 0.0
1953 63 50 0.02 0.0
1952 78 48 0.00 0.0
1951 61 47 0.00 0.0
1950 67 52 0.01 0.0
1949 73 46 0.00 0.0
1948 54 40 0.07 0.0
1947 77 56 0.00 0.0
1946 76 52 0.00 0.0
1945 65 49 0.00 0.0
1944 76 53 0.00 0.0
1943 80 55 0.00 0.0
1942 77 53 0.00 0.0
1941 72 52 0.00 0.0
1940 85 56 0.00 0.0
1939 75 53 0.00 0.0
1938 68 52 0.00 0.0
1937 62 44 0.00 0.0
1936 72 50 0.00 0.0
1935 59 56 0.05 0.0
1934 59 50 0.00 0.0
1933 50 45 1.22 0.0
1932 72 48 0.00 0.0
1931 68 49 0.00 0.0
1930 59 46 0.00 0.0
1929 59 49 0.00 0.0
1928 65 54 0.00 0.0
1927 64 53 0.00 0.0
1926 54 41 0.00 0.0
1925 83 50 0.00 0.0
1924 58 49 0.39 0.0
1923 62 47 0.01 0.0
1922 74 49 0.00 0.0
1921 65 51 0.00 0.0
1920 54 48 0.09 0.0
1919 73 56 0.00 0.0
1918 56 52 0.00 0.0
1917 59 51 0.00 0.0
1916 62 49 0.00 0.0
1915 61 54 0.00 0.0
1914 73 52 0.00 0.0
1913 65 47 0.00 0.0
1912 59 51 0.00 0.0
1911 60 44 0.00 0.0
1910 62 50 0.00 0.0
1909 79 48 0.00 0.0
1908 56 43 0.04 0.0
1907 71 51 0.00 0.0
1906 65 55 0.20 0.0
1905 72 53 0.00 0.0
1904 68 52 0.00 0.0
1903 64 59 0.03 0.0
1902 60 52 0.00 0.0
1901 60 45 0.00 0.0
1900 63 49 0.00 0.0
1899 71 52 0.00 0.0
1898 63 51 0.02 0.0
1897 66 50 0.00 0.0
1896 58 51 0.00 0.0
1895 61 55 0.01 0.0
1894 65 47 0.00 0.0
What's the all-time high for Seattle on 9/23?
For the date of Sep 23, the highest temperature ever reached in Seattle history is 85 °F which happened in 1940.
Highest Temperatures in Seattle on September 23
Rank Temperature Year
1 85 °F 1940
2 83 °F 1925
2 83 °F 1957
4 82 °F 1989
5 81 °F 2009
5 81 °F 1994
5 81 °F 1974
8 80 °F 1943
8 80 °F 1995
8 80 °F 2011
What's the all-time low for Seattle on 9/23?
For the date of Sep 23, the lowest temperature ever reached in Seattle history is 40 °F which happened in 1948.
Lowest Temperatures in Seattle on September 23
Rank Temperature Year
1 40 °F 1948
2 41 °F 1958
2 41 °F 1926
4 42 °F 1961
5 43 °F 1908
5 43 °F 1972
5 43 °F 1956
5 43 °F 2008
9 44 °F 1911
9 44 °F 1996
9 44 °F 1937
9 44 °F 1959
Lowest High Temperatures in Seattle on September 23
Rank Temperature Year
1 50 °F 1933
2 53 °F 1972
3 54 °F 1948
3 54 °F 1926
3 54 °F 1920
6 56 °F 1918
6 56 °F 1908
8 57 °F 1958
9 58 °F 2010
9 58 °F 1896
9 58 °F 1924
What's the most it has ever rained in Seattle on 9/23?
For the date of Sep 23, the most precipitation ever recorded in Seattle history is 1.22 inches which happened in 1933.
All-Time Most Precipitation in Seattle on September 23
Rank Precipitation Year
1 1.22 inches 1933
2 1.08 inches 2020
3 0.72 inches 2014
4 0.71 inches 1978
5 0.65 inches 1992
6 0.63 inches 1977
7 0.59 inches 1986
8 0.44 inches 1969
9 0.39 inches 1924
10 0.26 inches 2010
Weather Station Details
Years Station Coordinates
1948–2024 Seattle Tacoma International Airport location
1894–1947 University of Washington location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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