Seattle September 30 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of September 30.
September 30 All-Time Records
1894–2024
Highest temperature 82 °F 1992
Lowest temperature 36 °F 1950
Lowest daily high 52 °F 1919
Highest daily low 60 °F 1994
Most precipitation 1.65 inches 1953
Most snow none -
September 30 Average Weather
1991–2020 1
Average high 65.6 °F
Average low 50.1 °F
Chance precipitation 37.2%
Chance snow 0%
Seattle September 30 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 62 48 0.00 0.0
2022 70 53 0.00 0.0
2021 62 54 0.52 0.0
2020 76 55 0.00 0.0
2019 60 44 0.00 0.0
2018 65 56 0.03 0.0
2017 64 52 0.01 0.0
2016 65 46 0.00 0.0
2015 65 50 0.00 0.0
2014 67 54 0.00 0.0
2013 57 50 0.73 0.0
2012 70 46 0.00 0.0
2011 65 51 0.01 0.0
2010 71 52 0.00 0.0
2009 59 42 0.00 0.0
2008 71 52 0.00 n/a
2007 54 50 1.19 n/a
2006 60 52 0.00 n/a
2005 61 52 0.02 n/a
2004 62 50 0.00 n/a
2003 69 56 0.00 n/a
2002 57 45 0.00 n/a
2001 65 52 0.00 n/a
2000 61 54 0.26 n/a
1999 61 47 0.00 n/a
1998 70 50 0.00 n/a
1997 62 56 0.15 n/a
1996 66 49 0.00 0.0
1995 64 50 0.13 0.0
1994 71 60 0.00 0.0
1993 73 50 0.00 0.0
1992 82 54 0.00 0.0
1991 74 50 0.00 0.0
1990 70 46 0.00 0.0
1989 64 55 0.17 0.0
1988 74 54 0.00 0.0
1987 81 51 0.00 0.0
1986 60 49 0.02 0.0
1985 69 44 0.00 0.0
1984 64 50 0.00 0.0
1983 64 47 0.00 0.0
1982 64 43 0.00 0.0
1981 62 49 0.02 0.0
1980 66 53 0.00 0.0
1979 69 53 0.00 0.0
1978 67 50 0.11 0.0
1977 60 49 0.00 0.0
1976 66 54 0.00 0.0
1975 80 50 0.00 0.0
1974 67 44 0.00 0.0
1973 62 47 0.00 0.0
1972 66 44 0.00 0.0
1971 57 44 0.00 0.0
1970 66 51 0.00 0.0
1969 63 52 0.34 0.0
1968 64 47 0.00 0.0
1967 61 55 0.02 0.0
1966 72 53 0.00 0.0
1965 69 51 0.00 0.0
1964 62 51 0.53 0.0
1963 70 51 0.00 0.0
1962 74 51 0.00 0.0
1961 56 46 0.01 0.0
1960 72 46 0.00 0.0
1959 63 48 0.00 0.0
1958 67 50 0.00 0.0
1957 76 50 0.02 0.0
1956 62 47 0.00 0.0
1955 63 44 0.00 0.0
1954 60 40 0.00 0.0
1953 57 47 1.65 0.0
1952 68 53 0.00 0.0
1951 63 54 0.16 0.0
1950 61 36 0.35 0.0
1949 60 49 0.02 0.0
1948 63 41 0.00 0.0
1947 70 52 0.00 0.0
1946 60 54 0.17 0.0
1945 71 49 0.00 0.0
1944 67 54 0.00 0.0
1943 71 52 0.00 0.0
1942 65 56 0.12 0.0
1941 64 53 0.14 0.0
1940 66 54 0.08 0.0
1939 60 47 0.00 0.0
1938 74 58 0.00 0.0
1937 54 50 1.45 0.0
1936 57 52 0.00 0.0
1935 60 51 0.00 0.0
1934 60 51 0.00 0.0
1933 62 45 0.00 0.0
1932 66 50 0.00 0.0
1931 69 57 0.00 0.0
1930 63 42 0.00 0.0
1929 69 47 0.00 0.0
1928 64 52 0.03 0.0
1927 59 49 0.00 0.0
1926 61 51 0.00 0.0
1925 63 48 0.00 0.0
1924 66 52 0.66 0.0
1923 72 52 0.00 0.0
1922 66 51 0.00 0.0
1921 58 45 0.00 0.0
1920 62 53 0.20 0.0
1919 52 47 0.29 0.0
1918 68 56 0.00 0.0
1917 59 46 0.01 0.0
1916 55 45 0.00 0.0
1915 61 52 0.02 0.0
1914 56 49 0.00 0.0
1913 63 48 0.00 0.0
1912 62 53 0.12 0.0
1911 58 43 0.00 0.0
1910 57 51 0.60 0.0
1909 60 48 0.00 0.0
1908 68 48 0.00 0.0
1907 59 49 0.06 0.0
1906 73 48 0.02 0.0
1905 58 48 0.08 0.0
1904 71 55 0.00 0.0
1903 60 42 0.00 0.0
1902 60 48 0.01 0.0
1901 62 45 0.00 0.0
1900 57 45 0.03 0.0
1899 58 48 0.23 0.0
1898 55 46 0.12 0.0
1897 53 48 0.01 0.0
1896 61 46 0.56 0.0
1895 70 49 0.00 0.0
1894 54 49 0.07 0.0
What's the all-time high for Seattle on 9/30?
For the date of Sep 30, the highest temperature ever reached in Seattle history is 82 °F which happened in 1992.
Highest Temperatures in Seattle on September 30
Rank Temperature Year
1 82 °F 1992
2 81 °F 1987
3 80 °F 1975
4 76 °F 1957
4 76 °F 2020
6 74 °F 1988
6 74 °F 1938
6 74 °F 1991
6 74 °F 1962
10 73 °F 1906
10 73 °F 1993
What's the all-time low for Seattle on 9/30?
For the date of Sep 30, the lowest temperature ever reached in Seattle history is 36 °F which happened in 1950.
Lowest Temperatures in Seattle on September 30
Rank Temperature Year
1 36 °F 1950
2 40 °F 1954
3 41 °F 1948
4 42 °F 2009
4 42 °F 1903
4 42 °F 1930
7 43 °F 1982
7 43 °F 1911
9 44 °F 1971
9 44 °F 1974
9 44 °F 1955
9 44 °F 1985
9 44 °F 1972
9 44 °F 2019
Lowest High Temperatures in Seattle on September 30
Rank Temperature Year
1 52 °F 1919
2 53 °F 1897
3 54 °F 1937
3 54 °F 2007
3 54 °F 1894
6 55 °F 1898
6 55 °F 1916
8 56 °F 1961
8 56 °F 1914
10 57 °F 2002
10 57 °F 1953
10 57 °F 1936
10 57 °F 1900
10 57 °F 1971
10 57 °F 2013
10 57 °F 1910
What's the most it has ever rained in Seattle on 9/30?
For the date of Sep 30, the most precipitation ever recorded in Seattle history is 1.65 inches which happened in 1953.
All-Time Most Precipitation in Seattle on September 30
Rank Precipitation Year
1 1.65 inches 1953
2 1.45 inches 1937
3 1.19 inches 2007
4 0.73 inches 2013
5 0.66 inches 1924
6 0.60 inches 1910
7 0.56 inches 1896
8 0.53 inches 1964
9 0.52 inches 2021
10 0.35 inches 1950
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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