Seattle October 21 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of October 21.
October 21 All-Time Records
1894–2024
Highest temperature 74 °F 1901
Lowest temperature 32 °F 1949
Lowest daily high 46 °F 1966
Highest daily low 56 °F 2003
Most precipitation 1.61 inches 2017
Most snow none -
October 21 Average Weather
1991–2020 1
Average high 58.0 °F
Average low 45.4 °F
Chance precipitation 49.5%
Chance snow 0%
Seattle October 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 58 52 0.00 0.0
2022 53 46 0.31 0.0
2021 69 51 0.54 0.0
2020 53 42 0.05 0.0
2019 59 52 0.39 0.0
2018 56 43 0.00 0.0
2017 58 45 1.61 0.0
2016 57 48 0.02 0.0
2015 61 47 0.00 0.0
2014 61 53 0.04 0.0
2013 53 47 0.00 0.0
2012 53 40 0.25 0.0
2011 58 50 0.12 0.0
2010 59 45 0.00 0.0
2009 62 50 0.16 0.0
2008 54 41 0.00 n/a
2007 54 48 0.03 n/a
2006 61 44 0.00 n/a
2005 68 50 0.00 n/a
2004 52 47 0.00 n/a
2003 65 56 0.22 n/a
2002 58 53 0.00 n/a
2001 53 43 0.24 n/a
2000 58 42 0.00 n/a
1999 67 41 0.00 n/a
1998 69 41 0.00 n/a
1997 47 35 0.00 n/a
1996 50 41 0.73 n/a
1995 57 45 0.06 0.0
1994 59 47 0.00 0.0
1993 63 46 0.00 0.0
1992 61 50 0.07 0.0
1991 60 48 0.00 0.0
1990 54 46 0.69 0.0
1989 58 48 0.12 0.0
1988 59 52 0.02 0.0
1987 66 40 0.00 0.0
1986 60 44 0.00 0.0
1985 54 46 0.07 0.0
1984 52 36 0.00 0.0
1983 61 51 0.19 0.0
1982 55 49 0.67 0.0
1981 60 42 0.00 0.0
1980 57 42 0.00 0.0
1979 58 41 0.00 0.0
1978 59 42 0.00 0.0
1977 59 47 0.07 0.0
1976 57 39 0.00 0.0
1975 49 42 0.66 0.0
1974 54 40 0.00 0.0
1973 59 50 0.20 0.0
1972 54 49 0.10 0.0
1971 55 43 0.00 0.0
1970 50 42 0.43 0.0
1969 70 47 0.00 0.0
1968 52 45 0.21 0.0
1967 59 49 0.78 0.0
1966 46 39 0.36 0.0
1965 72 49 0.00 0.0
1964 62 41 0.00 0.0
1963 67 52 1.29 0.0
1962 65 54 0.01 0.0
1961 49 39 0.00 0.0
1960 57 52 0.13 0.0
1959 53 49 0.06 0.0
1958 66 39 0.00 0.0
1957 55 36 0.00 0.0
1956 54 42 0.14 0.0
1955 53 47 0.00 0.0
1954 55 40 0.00 0.0
1953 53 40 0.00 0.0
1952 60 52 0.00 0.0
1951 48 42 0.27 0.0
1950 51 36 0.00 0.0
1949 55 32 0.00 0.0
1948 57 43 0.00 0.0
1947 56 42 0.00 0.0
1946 59 47 0.32 0.0
1945 52 42 0.30 0.0
1944 64 48 0.00 0.0
1943 54 46 0.25 0.0
1942 56 48 0.00 0.0
1941 59 45 0.00 0.0
1940 62 49 0.00 0.0
1939 66 56 0.00 0.0
1938 60 43 0.00 0.0
1937 73 51 0.00 0.0
1936 56 43 0.00 0.0
1935 53 41 0.06 0.0
1934 62 48 0.11 0.0
1933 49 40 0.01 0.0
1932 55 49 0.62 0.0
1931 52 40 0.68 0.0
1930 59 50 0.00 0.0
1929 66 53 0.00 0.0
1928 51 35 0.00 0.0
1927 66 53 0.00 0.0
1926 59 45 0.00 0.0
1925 62 45 0.00 0.0
1924 64 54 0.00 0.0
1923 56 48 0.39 0.0
1922 62 52 0.00 0.0
1921 54 45 0.00 0.0
1920 56 48 0.06 0.0
1919 55 48 0.06 0.0
1918 56 42 0.04 0.0
1917 59 47 0.00 0.0
1916 53 41 0.00 0.0
1915 62 50 0.06 0.0
1914 59 43 0.00 0.0
1913 58 49 0.01 0.0
1912 46 40 0.23 0.0
1911 62 46 0.00 0.0
1910 54 44 0.00 0.0
1909 59 47 0.33 0.0
1908 51 38 0.00 0.0
1907 53 48 0.00 0.0
1906 55 37 0.00 0.0
1905 56 36 0.00 0.0
1904 58 50 0.00 0.0
1903 55 50 0.00 0.0
1902 57 52 0.40 0.0
1901 74 53 0.00 0.0
1900 62 54 0.19 0.0
1899 52 45 0.07 0.0
1898 60 44 0.00 0.0
1897 56 49 0.19 0.0
1896 53 46 0.04 0.0
1895 50 42 0.00 0.0
1894 47 41 1.18 0.0
What's the all-time high for Seattle on 10/21?
For the date of Oct 21, the highest temperature ever reached in Seattle history is 74 °F which happened in 1901.
Highest Temperatures in Seattle on October 21
Rank Temperature Year
1 74 °F 1901
2 73 °F 1937
3 72 °F 1965
4 70 °F 1969
5 69 °F 2021
5 69 °F 1998
7 68 °F 2005
8 67 °F 1999
8 67 °F 1963
10 66 °F 1987
10 66 °F 1958
10 66 °F 1927
10 66 °F 1929
10 66 °F 1939
What's the all-time low for Seattle on 10/21?
For the date of Oct 21, the lowest temperature ever reached in Seattle history is 32 °F which happened in 1949.
Lowest Temperatures in Seattle on October 21
Rank Temperature Year
1 32 °F 1949
2 35 °F 1997
2 35 °F 1928
4 36 °F 1905
4 36 °F 1957
4 36 °F 1984
4 36 °F 1950
8 37 °F 1906
9 38 °F 1908
10 39 °F 1976
10 39 °F 1966
10 39 °F 1958
10 39 °F 1961
Lowest High Temperatures in Seattle on October 21
Rank Temperature Year
1 46 °F 1966
1 46 °F 1912
3 47 °F 1894
3 47 °F 1997
5 48 °F 1951
6 49 °F 1961
6 49 °F 1933
6 49 °F 1975
9 50 °F 1996
9 50 °F 1970
9 50 °F 1895
What's the most it has ever rained in Seattle on 10/21?
For the date of Oct 21, the most precipitation ever recorded in Seattle history is 1.61 inches which happened in 2017.
All-Time Most Precipitation in Seattle on October 21
Rank Precipitation Year
1 1.61 inches 2017
2 1.29 inches 1963
3 1.18 inches 1894
4 0.78 inches 1967
5 0.73 inches 1996
6 0.69 inches 1990
7 0.68 inches 1931
8 0.67 inches 1982
9 0.66 inches 1975
10 0.62 inches 1932
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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