Seattle September 1 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of September 1.
September 1 All-Time Records
1894–2024
Highest temperature 91 °F 1987
Lowest temperature 46 °F 1973
Lowest daily high 57 °F 1939
Highest daily low 63 °F 2019
Most precipitation 0.89 inches 1939
Most snow none -
September 1 Average Weather
1991–2020 1
Average high 74.2 °F
Average low 55.3 °F
Chance precipitation 20.7%
Chance snow 0%
Seattle September 1 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 78 60 0.00 0.0
2022 79 58 0.00 0.0
2021 72 48 0.00 0.0
2020 81 56 0.00 0.0
2019 79 63 0.00 0.0
2018 73 57 0.00 0.0
2017 85 57 0.00 0.0
2016 66 56 0.17 0.0
2015 67 57 0.23 0.0
2014 74 55 0.00 0.0
2013 82 60 0.00 0.0
2012 71 51 0.00 0.0
2011 73 50 0.00 0.0
2010 71 57 0.00 0.0
2009 64 55 0.00 0.0
2008 64 50 0.00 n/a
2007 74 56 0.00 n/a
2006 88 55 0.00 n/a
2005 78 57 0.00 n/a
2004 67 56 0.17 n/a
2003 76 52 0.00 n/a
2002 70 56 0.00 n/a
2001 66 58 0.03 n/a
2000 66 50 0.00 n/a
1999 69 47 0.00 n/a
1998 86 60 0.00 n/a
1997 76 57 0.03 n/a
1996 74 55 0.00 0.0
1995 81 57 0.00 0.0
1994 70 55 0.00 0.0
1993 77 53 0.00 0.0
1992 78 54 0.00 0.0
1991 70 53 0.00 0.0
1990 70 55 0.01 0.0
1989 67 54 0.02 0.0
1988 85 55 0.00 0.0
1987 91 59 0.00 0.0
1986 74 54 0.00 0.0
1985 71 56 0.00 0.0
1984 69 54 0.00 0.0
1983 69 58 0.45 0.0
1982 78 56 0.00 0.0
1981 70 56 0.05 0.0
1980 60 50 0.16 0.0
1979 68 60 0.29 0.0
1978 66 59 0.55 0.0
1977 74 48 0.00 0.0
1976 68 55 0.00 0.0
1975 61 49 0.00 0.0
1974 87 57 0.00 0.0
1973 73 46 0.00 0.0
1972 79 56 0.00 0.0
1971 64 53 0.53 0.0
1970 67 57 0.00 0.0
1969 83 57 0.00 0.0
1968 63 58 0.14 0.0
1967 81 60 0.23 0.0
1966 74 50 0.00 0.0
1965 67 53 0.00 0.0
1964 61 50 0.00 0.0
1963 68 59 0.04 0.0
1962 71 50 0.00 0.0
1961 70 55 0.01 0.0
1960 59 47 0.00 0.0
1959 69 52 0.00 0.0
1958 68 54 0.00 0.0
1957 76 51 0.00 0.0
1956 68 54 0.00 0.0
1955 77 49 0.00 0.0
1954 71 52 0.00 0.0
1953 64 55 0.00 0.0
1952 81 51 0.00 0.0
1951 66 47 0.00 0.0
1950 83 51 0.00 0.0
1949 78 50 0.00 0.0
1948 74 50 0.00 0.0
1947 79 58 0.00 0.0
1946 73 56 0.00 0.0
1945 78 55 0.00 0.0
1944 67 55 0.07 0.0
1943 60 53 0.05 0.0
1942 79 56 0.00 0.0
1941 64 58 0.14 0.0
1940 78 56 0.00 0.0
1939 57 55 0.89 0.0
1938 74 56 0.00 0.0
1937 77 54 0.00 0.0
1936 70 56 0.10 0.0
1935 78 55 0.00 0.0
1934 75 54 0.00 0.0
1933 68 49 0.00 0.0
1932 63 53 0.02 0.0
1931 76 59 0.00 0.0
1930 75 53 0.00 0.0
1929 68 58 0.00 0.0
1928 82 56 0.00 0.0
1927 65 56 0.07 0.0
1926 68 56 0.04 0.0
1925 64 54 0.06 0.0
1924 79 53 0.00 0.0
1923 77 60 0.00 0.0
1922 61 54 0.26 0.0
1921 63 53 0.13 0.0
1920 81 57 0.00 0.0
1919 66 48 0.00 0.0
1918 76 54 0.00 0.0
1917 71 54 0.00 0.0
1916 73 57 0.02 0.0
1915 65 55 0.11 0.0
1914 72 50 0.00 0.0
1913 66 48 0.00 0.0
1912 58 52 0.02 0.0
1911 75 57 0.00 0.0
1910 68 51 0.00 0.0
1909 82 57 0.00 0.0
1908 77 52 0.00 0.0
1907 64 55 0.62 0.0
1906 67 56 0.00 0.0
1905 79 52 0.00 0.0
1904 77 53 0.00 0.0
1903 70 51 0.00 0.0
1902 71 54 0.00 0.0
1901 66 58 0.00 0.0
1900 72 56 0.00 0.0
1899 70 56 0.19 0.0
1898 69 51 0.00 0.0
1897 65 51 0.00 0.0
1896 68 59 0.00 0.0
1895 66 55 0.00 0.0
1894 69 58 0.00 0.0
What's the all-time high for Seattle on 9/1?
For the date of Sep 1, the highest temperature ever reached in Seattle history is 91 °F which happened in 1987.
Highest Temperatures in Seattle on September 1
Rank Temperature Year
1 91 °F 1987
2 88 °F 2006
3 87 °F 1974
4 86 °F 1998
5 85 °F 2017
5 85 °F 1988
7 83 °F 1969
7 83 °F 1950
9 82 °F 1909
9 82 °F 1928
9 82 °F 2013
What's the all-time low for Seattle on 9/1?
For the date of Sep 1, the lowest temperature ever reached in Seattle history is 46 °F which happened in 1973.
Lowest Temperatures in Seattle on September 1
Rank Temperature Year
1 46 °F 1973
2 47 °F 1951
2 47 °F 1960
2 47 °F 1999
5 48 °F 1913
5 48 °F 2021
5 48 °F 1919
5 48 °F 1977
9 49 °F 1975
9 49 °F 1955
9 49 °F 1933
Lowest High Temperatures in Seattle on September 1
Rank Temperature Year
1 57 °F 1939
2 58 °F 1912
3 59 °F 1960
4 60 °F 1980
4 60 °F 1943
6 61 °F 1975
6 61 °F 1922
6 61 °F 1964
9 63 °F 1968
9 63 °F 1921
9 63 °F 1932
What's the most it has ever rained in Seattle on 9/1?
For the date of Sep 1, the most precipitation ever recorded in Seattle history is 0.89 inches which happened in 1939.
All-Time Most Precipitation in Seattle on September 1
Rank Precipitation Year
1 0.89 inches 1939
2 0.62 inches 1907
3 0.55 inches 1978
4 0.53 inches 1971
5 0.45 inches 1983
6 0.29 inches 1979
7 0.26 inches 1922
8 0.23 inches 1967
8 0.23 inches 2015
10 0.19 inches 1899
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.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy