Seattle December 18 Weather Records

Daily averages and all-time records for weather in Seattle, Washington for the date of December 18.
December 18 All-Time Records
1894–2024
Highest temperature 58 °F 1917
Lowest temperature 12 °F 1924
Lowest daily high 23 °F 1924
Highest daily low 50 °F 1979
Most precipitation 1.32 inches 1932
Most snow 5.1 inches 1968
December 18 Average Weather
1991–2020 1
Average high 46.0 °F
Average low 36.5 °F
Chance precipitation 59.7%
Chance snow 5.2%
Seattle December 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 50 38 0.05 0.0
2022 42 31 0.02 0.2
2021 50 36 n/a 0.0
2020 52 44 0.19 0.0
2019 46 39 0.30 0.0
2018 54 45 0.70 0.0
2017 49 41 0.70 0.0
2016 39 27 0.00 0.0
2015 48 40 0.73 0.0
2014 49 44 0.51 0.0
2013 46 36 0.05 0.0
2012 39 33 0.13 0.6
2011 46 35 0.19 0.0
2010 48 37 0.08 0.0
2009 52 41 0.02 0.0
2008 35 25 0.18 2.7
2007 46 38 0.50 n/a
2006 40 28 0.00 n/a
2005 47 34 0.00 n/a
2004 54 41 0.00 n/a
2003 54 37 0.00 n/a
2002 45 37 0.08 n/a
2001 45 37 0.09 n/a
2000 44 33 0.00 n/a
1999 49 40 0.00 n/a
1998 41 33 0.00 n/a
1997 43 34 0.00 n/a
1996 42 30 0.00 n/a
1995 45 42 0.37 0.0
1994 53 46 0.16 0.0
1993 42 27 0.00 0.0
1992 37 28 0.02 0.0
1991 45 38 0.38 0.0
1990 41 21 0.45 2.5
1989 40 34 0.00 0.0
1988 44 32 0.44 0.0
1987 41 32 0.02 0.0
1986 46 33 0.06 0.0
1985 38 34 0.00 0.0
1984 31 20 0.00 0.0
1983 37 29 0.03 0.0
1982 48 40 0.20 0.0
1981 49 42 0.58 0.0
1980 44 37 0.00 0.0
1979 53 50 0.49 0.0
1978 44 35 0.01 0.0
1977 43 38 0.10 0.0
1976 51 41 0.00 0.0
1975 45 27 0.00 0.0
1974 51 41 0.29 0.0
1973 51 43 0.00 0.0
1972 54 45 0.41 0.0
1971 39 32 0.09 0.0
1970 39 30 0.00 0.0
1969 54 46 0.20 0.0
1968 43 28 0.42 5.1
1967 38 31 0.00 0.0
1966 51 47 0.12 0.0
1965 46 36 0.02 0.0
1964 30 18 0.03 0.2
1963 48 32 0.23 0.0
1962 44 41 0.07 0.0
1961 41 36 0.34 0.0
1960 51 42 1.23 0.0
1959 54 43 0.09 0.0
1958 54 42 0.18 0.0
1957 46 38 0.17 0.0
1956 49 45 0.07 0.0
1955 35 25 0.23 4.7
1954 38 27 0.00 0.0
1953 50 43 0.08 0.0
1952 41 33 0.01 0.0
1951 44 33 0.47 0.0
1950 47 40 0.06 0.0
1949 34 24 0.30 3.0
1948 37 24 0.00 0.0
1947 52 43 0.64 0.0
1946 41 32 0.00 0.0
1945 41 30 0.00 0.0
1944 43 30 0.00 0.0
1943 47 40 0.00 0.0
1942 46 40 0.00 0.0
1941 53 43 0.85 0.0
1940 50 44 0.12 0.0
1939 51 43 0.07 0.0
1938 42 33 0.00 0.0
1937 48 44 0.00 0.0
1936 54 49 0.09 0.0
1935 48 37 0.00 0.0
1934 47 44 0.59 0.0
1933 48 39 1.01 0.0
1932 42 37 1.32 0.0
1931 53 45 0.64 0.0
1930 48 38 0.14 0.0
1929 48 43 0.02 0.0
1928 42 35 0.00 0.0
1927 43 30 0.00 0.0
1926 45 39 0.01 0.0
1925 50 42 0.10 0.0
1924 23 12 0.00 0.0
1923 50 41 0.15 0.0
1922 47 30 0.74 0.0
1921 32 26 0.17 2.0
1920 50 42 0.18 0.0
1919 51 38 0.13 0.0
1918 44 37 0.00 0.0
1917 58 42 0.44 0.0
1916 46 41 0.14 0.0
1915 44 36 0.11 0.0
1914 40 26 0.00 0.0
1913 44 38 0.00 0.0
1912 48 39 0.00 0.0
1911 47 43 0.29 0.0
1910 43 35 0.00 0.0
1909 36 33 0.00 0.0
1908 39 28 0.00 0.0
1907 45 35 0.00 0.0
1906 51 46 0.36 0.0
1905 51 45 0.22 0.0
1904 53 44 0.04 0.0
1903 47 38 0.07 0.0
1902 41 31 0.00 0.0
1901 47 38 0.00 0.0
1900 51 44 0.09 0.0
1899 49 39 0.00 0.0
1898 50 44 0.17 0.0
1897 37 30 0.00 0.0
1896 46 42 0.10 0.0
1895 36 31 0.12 1.5
1894 44 35 0.00 0.0
What's the all-time high for Seattle on 12/18?
For the date of Dec 18, the highest temperature ever reached in Seattle history is 58 °F which happened in 1917.
Highest Temperatures in Seattle on December 18
Rank Temperature Year
1 58 °F 1917
2 54 °F 2003
2 54 °F 2004
2 54 °F 1969
2 54 °F 1958
2 54 °F 2018
2 54 °F 1936
2 54 °F 1972
2 54 °F 1959
10 53 °F 1904
10 53 °F 1994
10 53 °F 1931
10 53 °F 1979
10 53 °F 1941
What's the all-time low for Seattle on 12/18?
For the date of Dec 18, the lowest temperature ever reached in Seattle history is 12 °F which happened in 1924.
Lowest Temperatures in Seattle on December 18
Rank Temperature Year
1 12 °F 1924
2 18 °F 1964
3 20 °F 1984
4 21 °F 1990
5 24 °F 1948
5 24 °F 1949
7 25 °F 2008
7 25 °F 1955
9 26 °F 1914
9 26 °F 1921
Lowest High Temperatures in Seattle on December 18
Rank Temperature Year
1 23 °F 1924
2 30 °F 1964
3 31 °F 1984
4 32 °F 1921
5 34 °F 1949
6 35 °F 2008
6 35 °F 1955
8 36 °F 1895
8 36 °F 1909
10 37 °F 1897
10 37 °F 1983
10 37 °F 1992
10 37 °F 1948
What's the most it has ever rained in Seattle on 12/18?
For the date of Dec 18, the most precipitation ever recorded in Seattle history is 1.32 inches which happened in 1932.
All-Time Most Precipitation in Seattle on December 18
Rank Precipitation Year
1 1.32 inches 1932
2 1.23 inches 1960
3 1.01 inches 1933
4 0.85 inches 1941
5 0.74 inches 1922
6 0.73 inches 2015
7 0.70 inches 2017
7 0.70 inches 2018
9 0.64 inches 1947
9 0.64 inches 1931
All-Time Most Snow in Seattle on December 18
Rank Precipitation Year
1 5.1 inches 1968
2 4.7 inches 1955
3 3.0 inches 1949
4 2.7 inches 2008
5 2.5 inches 1990
6 2.0 inches 1921
7 1.5 inches 1895
8 0.6 inches 2012
9 0.2 inches 1964
9 0.2 inches 2022
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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