Washington D.C. August 21 Weather Records

Daily averages and all-time records for weather in Washington D.C., District of Columbia for the date of August 21.
August 21 All-Time Records
1851–2023
Highest temperature 100 °F 1874
Lowest temperature 53 °F 1908
Lowest daily high 65 °F 1926
Highest daily low 76 °F 2011
Most precipitation 2.5 inches 2018
Most snow none -
August 21 Average Weather
1991–2020 1
Average high 86.7 °F
Average low 70.0 °F
Chance precipitation 27.1%
Chance snow 0%
Washington D.C. August 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2022 81 73 0.16 0.0
2021 88 75 0.21 0.0
2020 84 69 0.00 0.0
2019 93 72 0.01 0.0
2018 82 73 2.46 0.0
2017 90 75 0.01 0.0
2016 91 74 0.69 0.0
2015 86 71 0.00 0.0
2014 90 71 0.01 0.0
2013 89 73 0.07 0.0
2012 86 66 0.59 0.0
2011 90 76 0.27 0.0
2010 88 74 0.00 0.0
2009 95 73 0.10 0.0
2008 86 67 0.00 0.0
2007 71 65 1.46 0.0
2006 87 66 0.00 0.0
2005 94 75 0.00 0.0
2004 80 67 0.23 0.0
2003 89 73 0.00 0.0
2002 89 74 0.00 0.0
2001 84 67 0.00 0.0
2000 79 59 0.00 0.0
1999 81 67 0.10 0.0
1998 89 62 0.00 0.0
1997 86 65 0.00 0.0
1996 85 68 0.00 0.0
1995 96 66 0.00 0.0
1994 85 72 0.08 0.0
1993 86 71 0.00 0.0
1992 82 59 0.00 0.0
1991 86 66 0.00 0.0
1990 72 62 0.03 0.0
1989 83 75 0.15 0.0
1988 84 68 0.00 0.0
1987 89 65 0.00 0.0
1986 70 67 1.10 0.0
1985 78 67 0.03 0.0
1984 80 59 0.00 0.0
1983 92 73 0.00 0.0
1982 82 66 0.44 0.0
1981 81 60 0.00 0.0
1980 78 69 0.00 0.0
1979 76 67 0.52 0.0
1978 85 66 0.00 0.0
1977 82 62 0.00 0.0
1976 88 60 0.00 0.0
1975 85 70 0.00 0.0
1974 84 71 0.00 0.0
1973 73 69 0.86 0.0
1972 84 65 0.00 0.0
1971 93 73 0.00 0.0
1970 87 68 0.00 0.0
1969 81 58 0.00 0.0
1968 96 76 0.00 0.0
1967 77 66 0.06 0.0
1966 88 71 0.00 0.0
1965 86 63 0.43 0.0
1964 92 68 0.00 0.0
1963 83 67 0.01 0.0
1962 94 76 0.01 0.0
1961 76 66 0.41 0.0
1960 93 70 0.03 0.0
1959 96 74 0.00 0.0
1958 91 69 0.00 0.0
1957 88 61 0.00 0.0
1956 68 60 0.13 0.0
1955 94 71 0.00 0.0
1954 74 68 0.16 0.0
1953 79 60 0.00 0.0
1952 85 69 0.18 0.0
1951 94 74 0.00 0.0
1950 78 62 0.00 0.0
1949 80 58 0.00 0.0
1948 82 66 0.00 0.0
1947 81 73 0.00 0.0
1946 82 67 0.00 0.0
1945 87 65 0.00 0.0
1944 88 65 0.00 0.0
1943 84 66 0.00 0.0
1942 86 72 0.00 0.0
1941 83 60 0.00 0.0
1940 76 58 0.00 0.0
1939 89 72 0.01 0.0
1938 89 67 0.00 0.0
1937 95 76 0.00 0.0
1936 95 68 1.89 0.0
1935 83 72 1.03 0.0
1934 75 60 0.00 0.0
1933 73 65 1.49 0.0
1932 81 60 0.00 0.0
1931 68 61 1.08 0.0
1930 77 62 0.00 0.0
1929 83 54 0.00 0.0
1928 84 60 1.04 0.0
1927 81 63 0.00 0.0
1926 65 60 0.57 0.0
1925 75 59 0.28 0.0
1924 86 67 0.00 0.0
1923 89 63 0.00 0.0
1922 78 54 0.00 0.0
1921 79 60 0.00 0.0
1920 83 70 0.00 0.0
1919 88 69 0.55 0.0
1918 83 54 0.00 0.0
1917 90 70 0.00 0.0
1916 94 68 0.00 0.0
1915 84 68 0.35 0.0
1914 90 70 0.08 0.0
1913 77 54 0.00 0.0
1912 90 68 0.00 0.0
1911 80 54 0.00 0.0
1910 79 61 0.00 0.0
1909 78 62 0.00 0.0
1908 80 53 0.00 0.0
1907 88 67 0.20 0.0
1906 92 70 2.12 0.0
1905 84 67 0.00 0.0
1904 84 68 0.02 0.0
1903 80 60 0.00 0.0
1902 82 69 0.00 0.0
1901 89 72 0.00 0.0
1900 75 66 0.38 0.0
1899 94 69 0.00 0.0
1898 84 63 0.00 0.0
1897 84 66 0.00 0.0
1896 82 61 0.00 0.0
1895 78 63 0.00 0.0
1894 78 62 0.00 0.0
1893 84 64 0.00 0.0
1892 90 67 0.00 0.0
1891 84 70 0.89 0.0
1890 87 68 1.12 0.0
1889 89 66 0.00 0.0
1888 84 73 0.89 0.0
1887 85 64 0.20 0.0
1886 77 57 0.00 0.0
1885 88 69 0.00 0.0
1884 92 72 0.05 0.0
1883 90 72 0.00 n/a
1882 84 57 0.00 n/a
1881 90 67 0.04 n/a
1880 90 73 0.00 n/a
1879 85 67 0.00 n/a
1878 82 66 0.00 n/a
1877 90 64 0.00 n/a
1876 76 54 0.00 n/a
1875 84 62 0.00 n/a
1874 100 71 0.00 n/a
1873 87 73 0.33 n/a
1872 91 74 0.00 n/a
1858 n/a 66 0.00 n/a
1851 76 64 n/a n/a
All-Time Highest Temperatures in Washington D.C. on August 21
Rank Temperature Year
1 100 °F 1874
2 96 °F 1959
2 96 °F 1995
2 96 °F 1968
5 95 °F 1937
5 95 °F 1936
5 95 °F 2009
8 94 °F 2005
8 94 °F 1955
8 94 °F 1962
8 94 °F 1916
8 94 °F 1899
8 94 °F 1951
All-Time Lowest Temperatures in Washington D.C. on August 21
Rank Temperature Year
1 53 °F 1908
2 54 °F 1913
2 54 °F 1922
2 54 °F 1911
2 54 °F 1918
2 54 °F 1876
2 54 °F 1929
8 57 °F 1886
8 57 °F 1882
10 58 °F 1949
10 58 °F 1969
10 58 °F 1940
Lowest High Temperatures in Washington D.C. on August 21
Rank Temperature Year
1 65 °F 1926
2 68 °F 1956
2 68 °F 1931
4 70 °F 1986
5 71 °F 2007
6 72 °F 1990
7 73 °F 1933
7 73 °F 1973
9 74 °F 1954
10 75 °F 1900
10 75 °F 1925
10 75 °F 1934
All-Time Most Precipitation in Washington D.C. on August 21
Rank Precipitation Year
1 2.5 inches 2018
2 2.1 inches 1906
3 1.9 inches 1936
4 1.5 inches 1933
5 1.5 inches 2007
6 1.1 inches 1890
7 1.1 inches 1986
8 1.1 inches 1931
9 1.0 inches 1928
10 1.0 inches 1935
Weather Station Details
Years Station Coordinates
1945–2023 Washington Reagan Airport location
1851–1945 Washington D.C. location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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