Seattle September 17 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of September 17.
September 17 All-Time Records
1894–2024
Highest temperature 85 °F 1991
Lowest temperature 42 °F 1965
Lowest daily high 57 °F 2001
Highest daily low 59 °F 2020
Most precipitation 1.49 inches 2010
Most snow none -
September 17 Average Weather
1991–2020 1
Average high 70.3 °F
Average low 52.9 °F
Chance precipitation 29.0%
Chance snow 0%
Seattle September 17 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 70 55 0.00 0.0
2022 68 51 0.00 0.0
2021 69 53 0.58 0.0
2020 74 59 0.00 0.0
2019 64 55 0.65 0.0
2018 65 51 0.00 0.0
2017 64 54 0.15 0.0
2016 67 57 0.22 0.0
2015 65 55 0.07 0.0
2014 73 58 0.02 0.0
2013 64 57 0.00 0.0
2012 82 53 0.00 0.0
2011 62 52 0.20 0.0
2010 64 57 1.49 0.0
2009 70 57 0.00 0.0
2008 74 54 0.00 n/a
2007 62 51 0.22 n/a
2006 66 52 0.00 n/a
2005 66 50 0.00 n/a
2004 62 49 0.20 n/a
2003 62 47 0.01 n/a
2002 66 51 0.05 n/a
2001 57 52 0.02 n/a
2000 72 54 0.00 n/a
1999 68 51 0.00 n/a
1998 72 53 0.02 n/a
1997 62 53 0.77 n/a
1996 66 52 0.01 0.0
1995 66 59 0.00 0.0
1994 80 56 0.00 0.0
1993 75 49 0.00 0.0
1992 68 49 0.00 0.0
1991 85 58 0.00 0.0
1990 73 54 0.00 0.0
1989 66 52 0.22 0.0
1988 66 45 0.03 0.0
1987 71 45 0.00 0.0
1986 63 49 0.27 0.0
1985 61 48 0.36 0.0
1984 78 55 0.00 0.0
1983 61 49 0.00 0.0
1982 80 51 0.00 0.0
1981 74 54 0.00 0.0
1980 64 51 0.00 0.0
1979 75 54 0.00 0.0
1978 58 45 0.58 0.0
1977 65 50 0.00 0.0
1976 63 58 0.00 0.0
1975 67 53 0.00 0.0
1974 78 50 0.00 0.0
1973 70 54 0.01 0.0
1972 61 48 0.00 0.0
1971 76 53 0.00 0.0
1970 63 57 0.71 0.0
1969 67 53 1.26 0.0
1968 60 52 0.56 0.0
1967 78 57 0.00 0.0
1966 66 56 0.86 0.0
1965 62 42 0.00 0.0
1964 64 51 0.65 0.0
1963 67 46 0.00 0.0
1962 75 51 0.00 0.0
1961 68 49 0.00 0.0
1960 58 50 0.00 0.0
1959 72 45 0.00 0.0
1958 68 54 0.01 0.0
1957 63 56 0.12 0.0
1956 58 48 0.00 0.0
1955 63 48 0.03 0.0
1954 58 54 0.28 0.0
1953 65 45 0.00 0.0
1952 76 49 0.00 0.0
1951 73 49 0.00 0.0
1950 73 48 0.00 0.0
1949 61 47 0.00 0.0
1948 68 45 0.00 0.0
1947 63 48 0.00 0.0
1946 67 53 0.00 0.0
1945 60 53 0.00 0.0
1944 58 50 0.15 0.0
1943 65 58 0.00 0.0
1942 67 52 0.00 0.0
1941 63 50 0.13 0.0
1940 68 56 0.17 0.0
1939 66 55 0.00 0.0
1938 78 55 0.00 0.0
1937 71 56 0.00 0.0
1936 70 50 0.00 0.0
1935 67 53 0.00 0.0
1934 61 52 0.00 0.0
1933 62 54 0.03 0.0
1932 64 50 0.00 0.0
1931 67 53 0.23 0.0
1930 77 53 0.00 0.0
1929 67 57 0.00 0.0
1928 75 49 0.00 0.0
1927 71 55 0.00 0.0
1926 57 49 0.04 0.0
1925 70 52 0.00 0.0
1924 65 50 0.05 0.0
1923 75 52 0.00 0.0
1922 63 50 0.00 0.0
1921 64 46 0.05 0.0
1920 70 54 0.01 0.0
1919 64 58 0.00 0.0
1918 72 54 0.00 0.0
1917 67 53 0.00 0.0
1916 68 48 0.00 0.0
1915 71 53 0.00 0.0
1914 60 48 0.26 0.0
1913 65 53 0.00 0.0
1912 67 55 0.00 0.0
1911 64 50 0.00 0.0
1910 64 51 0.05 0.0
1909 61 49 0.00 0.0
1908 63 45 0.00 0.0
1907 63 51 0.00 0.0
1906 73 56 0.00 0.0
1905 65 50 0.00 0.0
1904 64 51 0.00 0.0
1903 71 49 0.00 0.0
1902 68 45 0.00 0.0
1901 76 51 0.00 0.0
1900 63 51 0.00 0.0
1899 69 51 0.00 0.0
1898 72 53 0.00 0.0
1897 72 52 0.00 0.0
1896 58 47 0.00 0.0
1895 66 54 0.00 0.0
1894 63 46 0.00 0.0
What's the all-time high for Seattle on 9/17?
For the date of Sep 17, the highest temperature ever reached in Seattle history is 85 °F which happened in 1991.
Highest Temperatures in Seattle on September 17
Rank Temperature Year
1 85 °F 1991
2 82 °F 2012
3 80 °F 1994
3 80 °F 1982
5 78 °F 1938
5 78 °F 1984
5 78 °F 1967
5 78 °F 1974
9 77 °F 1930
10 76 °F 1901
10 76 °F 1971
10 76 °F 1952
What's the all-time low for Seattle on 9/17?
For the date of Sep 17, the lowest temperature ever reached in Seattle history is 42 °F which happened in 1965.
Lowest Temperatures in Seattle on September 17
Rank Temperature Year
1 42 °F 1965
2 45 °F 1987
2 45 °F 1959
2 45 °F 1902
2 45 °F 1948
2 45 °F 1988
2 45 °F 1978
2 45 °F 1953
2 45 °F 1908
10 46 °F 1921
10 46 °F 1963
10 46 °F 1894
Lowest High Temperatures in Seattle on September 17
Rank Temperature Year
1 57 °F 2001
1 57 °F 1926
3 58 °F 1960
3 58 °F 1896
3 58 °F 1956
3 58 °F 1954
3 58 °F 1978
3 58 °F 1944
9 60 °F 1914
9 60 °F 1945
9 60 °F 1968
What's the most it has ever rained in Seattle on 9/17?
For the date of Sep 17, the most precipitation ever recorded in Seattle history is 1.49 inches which happened in 2010.
All-Time Most Precipitation in Seattle on September 17
Rank Precipitation Year
1 1.49 inches 2010
2 1.26 inches 1969
3 0.86 inches 1966
4 0.77 inches 1997
5 0.71 inches 1970
6 0.65 inches 1964
6 0.65 inches 2019
8 0.58 inches 2021
8 0.58 inches 1978
10 0.56 inches 1968
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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