Seattle October 31 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of October 31 (Halloween).
October 31 All-Time Records
1894–2024
Highest temperature 71 °F 1949
Lowest temperature 30 °F 2006
Lowest daily high 41 °F 1984
Highest daily low 54 °F 1987
Most precipitation 1.30 inches 2015
Most snow none -
October 31 Average Weather
1991–2020 1
Average high 55.2 °F
Average low 43.5 °F
Chance precipitation 54.3%
Chance snow 0.2%
Seattle October 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 53 36 0.00 0.0
2022 54 46 0.64 0.0
2021 59 37 0.00 0.0
2020 57 41 0.00 0.0
2019 53 35 0.00 0.0
2018 58 49 0.02 0.0
2017 58 38 0.00 0.0
2016 57 49 0.66 0.0
2015 60 53 1.30 0.0
2014 55 47 0.67 0.0
2013 58 51 0.01 0.0
2012 60 52 0.57 0.0
2011 53 42 0.00 0.0
2010 56 47 0.16 0.0
2009 57 45 0.04 0.0
2008 59 50 0.35 n/a
2007 47 34 0.00 n/a
2006 47 30 0.00 n/a
2005 54 48 0.73 n/a
2004 51 37 0.00 n/a
2003 46 30 0.00 n/a
2002 55 38 0.00 n/a
2001 53 46 0.44 n/a
2000 51 44 0.01 n/a
1999 55 41 0.09 n/a
1998 50 45 0.19 n/a
1997 56 50 0.00 n/a
1996 52 32 0.00 n/a
1995 51 36 0.00 0.0
1994 55 44 0.70 0.0
1993 58 47 0.00 0.0
1992 57 48 0.52 0.0
1991 45 41 0.03 0.0
1990 52 42 1.04 0.0
1989 54 42 0.00 0.0
1988 66 49 0.00 0.0
1987 58 54 0.23 0.0
1986 58 46 0.22 0.0
1985 50 39 0.02 0.0
1984 41 31 0.03 0.0
1983 60 48 0.00 0.0
1982 52 46 0.01 0.0
1981 64 51 0.00 0.0
1980 60 50 0.68 0.0
1979 55 42 0.00 0.0
1978 53 33 0.00 0.0
1977 51 43 0.05 0.0
1976 60 49 0.75 0.0
1975 53 44 0.00 0.0
1974 51 44 0.25 0.0
1973 46 40 0.66 0.0
1972 48 38 0.00 0.0
1971 50 37 0.21 0.0
1970 65 44 0.00 0.0
1969 66 51 0.00 0.0
1968 52 40 0.00 0.0
1967 59 47 0.53 0.0
1966 59 46 0.00 0.0
1965 59 47 0.00 0.0
1964 58 46 0.02 0.0
1963 58 41 0.00 0.0
1962 54 51 0.00 0.0
1961 48 33 0.04 0.0
1960 58 47 0.17 0.0
1959 59 40 0.00 0.0
1958 56 50 0.25 0.0
1957 54 41 0.00 0.0
1956 45 38 0.07 0.0
1955 46 39 0.06 0.0
1954 62 42 0.00 0.0
1953 55 52 0.59 0.0
1952 50 42 0.22 0.0
1951 49 35 0.00 0.0
1950 50 37 0.14 0.0
1949 71 42 0.00 0.0
1948 46 41 0.08 0.0
1947 60 48 0.63 0.0
1946 50 43 0.17 0.0
1945 55 46 0.01 0.0
1944 58 51 0.50 0.0
1943 49 38 0.00 0.0
1942 57 49 0.72 0.0
1941 55 51 0.01 0.0
1940 54 40 0.15 0.0
1939 63 42 0.00 0.0
1938 58 50 0.10 0.0
1937 59 48 0.00 0.0
1936 51 45 0.01 0.0
1935 42 30 0.00 0.0
1934 61 53 0.20 0.0
1933 56 46 0.00 0.0
1932 52 46 0.21 0.0
1931 64 48 0.00 0.0
1930 58 50 0.00 0.0
1929 52 41 0.00 0.0
1928 54 47 0.01 0.0
1927 52 39 0.00 0.0
1926 58 40 0.00 0.0
1925 57 45 0.00 0.0
1924 52 45 0.14 0.0
1923 56 42 0.00 0.0
1922 48 41 0.09 0.0
1921 56 46 0.05 0.0
1920 53 34 0.00 0.0
1919 48 40 0.23 0.0
1918 57 49 0.00 0.0
1917 63 48 0.00 0.0
1916 53 45 0.08 0.0
1915 58 48 0.03 0.0
1914 54 49 0.36 0.0
1913 53 48 0.11 0.0
1912 59 42 0.00 0.0
1911 55 47 0.00 0.0
1910 55 49 0.10 0.0
1909 53 44 0.25 0.0
1908 54 42 0.06 0.0
1907 56 48 0.02 0.0
1906 51 42 0.08 0.0
1905 55 33 0.00 0.0
1904 55 51 0.05 0.0
1903 56 41 0.00 0.0
1902 51 45 0.11 0.0
1901 60 52 0.00 0.0
1900 53 47 0.04 0.0
1899 60 42 0.00 0.0
1898 54 45 0.83 0.0
1897 64 41 0.00 0.0
1896 53 45 0.29 0.0
1895 51 41 0.00 0.0
1894 50 44 0.18 0.0
What's the all-time high for Seattle on 10/31?
For the date of Oct 31, the highest temperature ever reached in Seattle history is 71 °F which happened in 1949.
Highest Temperatures in Seattle on October 31
Rank Temperature Year
1 71 °F 1949
2 66 °F 1988
2 66 °F 1969
4 65 °F 1970
5 64 °F 1931
5 64 °F 1897
5 64 °F 1981
8 63 °F 1917
8 63 °F 1939
10 62 °F 1954
What's the all-time low for Seattle on 10/31?
For the date of Oct 31, the lowest temperature ever reached in Seattle history is 30 °F which has happened 3 times, most recently in 2006.
Lowest Temperatures in Seattle on October 31
Rank Temperature Year
1 30 °F 2006
1 30 °F 1935
1 30 °F 2003
4 31 °F 1984
5 32 °F 1996
6 33 °F 1961
6 33 °F 1905
6 33 °F 1978
9 34 °F 2007
9 34 °F 1920
Lowest High Temperatures in Seattle on October 31
Rank Temperature Year
1 41 °F 1984
2 42 °F 1935
3 45 °F 1991
3 45 °F 1956
5 46 °F 1973
5 46 °F 2003
5 46 °F 1955
5 46 °F 1948
9 47 °F 2006
9 47 °F 2007
What's the most it has ever rained in Seattle on 10/31?
For the date of Oct 31, the most precipitation ever recorded in Seattle history is 1.30 inches which happened in 2015.
All-Time Most Precipitation in Seattle on October 31
Rank Precipitation Year
1 1.30 inches 2015
2 1.04 inches 1990
3 0.83 inches 1898
4 0.75 inches 1976
5 0.73 inches 2005
6 0.72 inches 1942
7 0.70 inches 1994
8 0.68 inches 1980
9 0.67 inches 2014
10 0.66 inches 2016
10 0.66 inches 1973
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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