Washington D.C. September 20 Weather Records

Daily averages and all-time records for weather in Washington D.C. for the date of September 20.
September 20 All-Time Records
1851–2024
Highest temperature 94 °F 1895
Lowest temperature 41 °F 1916
Lowest daily high 62 °F 1901
Highest daily low 73 °F 1965
Most precipitation 1.43 inches 1938
Most snow none -
September 20 Average Weather
1991–2020 1
Average high 78.7 °F
Average low 61.9 °F
Chance precipitation 28.7%
Chance snow 0%
Washington D.C. September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 81 58 0.00 0.0
2022 86 68 0.00 0.0
2021 80 64 0.00 0.0
2020 69 46 0.00 0.0
2019 79 55 0.00 0.0
2018 83 69 0.00 0.0
2017 88 70 0.00 0.0
2016 80 71 0.00 0.0
2015 82 68 0.00 0.0
2014 84 64 0.00 0.0
2013 82 61 0.00 0.0
2012 75 54 0.00 0.0
2011 71 64 0.16 0.0
2010 81 64 0.00 0.0
2009 77 57 0.00 0.0
2008 75 56 0.00 0.0
2007 75 60 0.00 0.0
2006 70 55 0.00 0.0
2005 90 71 0.00 0.0
2004 72 52 0.00 0.0
2003 85 64 0.00 0.0
2002 85 68 0.00 0.0
2001 73 67 0.42 0.0
2000 85 57 0.00 0.0
1999 77 61 0.06 0.0
1998 85 69 0.00 0.0
1997 90 65 0.00 0.0
1996 79 56 0.00 0.0
1995 77 65 0.00 0.0
1994 80 56 0.00 0.0
1993 67 53 0.03 0.0
1992 77 62 0.00 0.0
1991 69 54 0.00 0.0
1990 76 62 0.00 0.0
1989 78 64 1.10 0.0
1988 84 72 0.07 0.0
1987 67 62 0.35 0.0
1986 79 64 0.00 0.0
1985 83 60 0.00 0.0
1984 83 57 0.00 0.0
1983 90 69 0.00 0.0
1982 69 63 0.21 0.0
1981 73 53 0.00 0.0
1980 86 70 0.00 0.0
1979 70 54 0.00 0.0
1978 79 65 0.00 0.0
1977 89 71 0.00 0.0
1976 83 60 0.00 0.0
1975 83 72 0.00 0.0
1974 85 68 0.00 0.0
1973 79 55 0.00 0.0
1972 67 61 0.00 0.0
1971 84 70 0.00 0.0
1970 81 61 0.00 0.0
1969 66 58 0.25 0.0
1968 83 56 0.00 0.0
1967 86 68 0.00 0.0
1966 65 59 0.67 0.0
1965 91 73 0.00 0.0
1964 68 62 0.04 0.0
1963 88 61 0.00 0.0
1962 66 51 0.00 0.0
1961 75 67 0.05 0.0
1960 81 66 0.00 0.0
1959 74 49 0.00 0.0
1958 72 63 0.06 0.0
1957 78 66 0.00 0.0
1956 63 47 0.00 0.0
1955 87 66 0.00 0.0
1954 80 68 0.06 0.0
1953 80 64 0.06 0.0
1952 74 60 0.00 0.0
1951 83 58 0.00 0.0
1950 73 63 0.00 0.0
1949 71 57 0.00 0.0
1948 90 66 0.00 0.0
1947 74 61 0.00 0.0
1946 78 62 1.00 0.0
1945 80 62 0.02 0.0
1944 82 70 0.09 0.0
1943 65 56 0.18 0.0
1942 81 58 0.00 0.0
1941 73 54 0.00 0.0
1940 88 64 0.00 0.0
1939 76 62 0.00 0.0
1938 65 56 1.43 0.0
1937 70 45 0.00 0.0
1936 70 62 0.03 0.0
1935 82 63 0.01 0.0
1934 80 55 0.00 0.0
1933 87 64 0.16 0.0
1932 85 64 0.00 0.0
1931 80 68 0.05 0.0
1930 84 61 0.00 0.0
1929 66 44 0.00 0.0
1928 71 58 0.02 0.0
1927 74 54 0.00 0.0
1926 85 61 0.00 0.0
1925 89 65 0.01 0.0
1924 70 60 0.20 0.0
1923 84 66 0.01 0.0
1922 72 53 0.00 0.0
1921 78 56 0.00 0.0
1920 70 45 0.00 0.0
1919 87 68 0.00 0.0
1918 70 47 1.16 0.0
1917 82 54 0.00 0.0
1916 74 41 0.00 0.0
1915 83 61 0.00 0.0
1914 81 55 0.00 0.0
1913 70 62 0.00 0.0
1912 76 56 0.00 0.0
1911 80 59 0.00 0.0
1910 84 64 0.00 0.0
1909 73 53 0.00 0.0
1908 69 62 0.00 0.0
1907 82 64 0.00 0.0
1906 89 71 0.00 0.0
1905 87 70 0.00 0.0
1904 78 66 0.32 0.0
1903 70 48 0.00 0.0
1902 74 60 0.04 0.0
1901 62 49 0.02 0.0
1900 78 50 0.00 0.0
1899 78 62 0.99 0.0
1898 76 54 0.00 0.0
1897 66 50 0.00 0.0
1896 68 48 0.00 0.0
1895 94 69 0.00 0.0
1894 77 60 0.07 0.0
1893 78 66 0.00 0.0
1892 68 60 0.00 0.0
1891 78 62 0.00 0.0
1890 71 57 0.00 0.0
1889 65 47 0.01 0.0
1888 79 57 0.00 0.0
1887 78 57 0.00 0.0
1886 72 54 0.00 0.0
1885 76 63 0.00 0.0
1884 82 55 0.00 0.0
1883 75 58 0.00 n/a
1882 88 69 1.39 n/a
1881 85 67 0.00 n/a
1880 88 64 0.00 n/a
1879 72 58 0.09 n/a
1878 86 64 0.00 n/a
1877 66 55 0.00 n/a
1876 75 57 0.00 n/a
1875 67 47 0.00 n/a
1874 77 60 0.53 n/a
1873 64 50 0.00 n/a
1872 71 55 0.00 n/a
1871 n/a n/a 0.33 n/a
1870 n/a n/a n/a n/a
1869 n/a n/a n/a n/a
1868 n/a n/a n/a n/a
1867 n/a n/a n/a n/a
1866 n/a n/a n/a n/a
1865 n/a n/a n/a n/a
1864 n/a n/a n/a n/a
1863 n/a n/a n/a n/a
1862 n/a n/a n/a n/a
1861 n/a n/a n/a n/a
1860 n/a n/a n/a n/a
1859 n/a n/a 0.57 n/a
1858 n/a n/a 0.00 n/a
1857 n/a n/a n/a n/a
1856 77 n/a 0.00 n/a
1855 n/a n/a 0.12 n/a
1854 n/a n/a n/a n/a
1853 n/a n/a n/a n/a
1852 n/a n/a n/a n/a
1851 79 56 n/a n/a
What's the all-time high for Washington D.C. on 9/20?
For the date of Sep 20, the highest temperature ever reached in Washington D.C. history is 94 °F which happened in 1895.
Highest Temperatures in Washington D.C. on September 20
Rank Temperature Year
1 94 °F 1895
2 91 °F 1965
3 90 °F 1997
3 90 °F 1983
3 90 °F 2005
3 90 °F 1948
7 89 °F 1977
7 89 °F 1925
7 89 °F 1906
10 88 °F 1880
10 88 °F 1963
10 88 °F 1940
10 88 °F 1882
10 88 °F 2017
What's the all-time low for Washington D.C. on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Washington D.C. history is 41 °F which happened in 1916.
Lowest Temperatures in Washington D.C. on September 20
Rank Temperature Year
1 41 °F 1916
2 44 °F 1929
3 45 °F 1937
3 45 °F 1920
5 46 °F 2020
6 47 °F 1956
6 47 °F 1918
6 47 °F 1875
6 47 °F 1889
10 48 °F 1903
10 48 °F 1896
Lowest High Temperatures in Washington D.C. on September 20
Rank Temperature Year
1 62 °F 1901
2 63 °F 1956
3 64 °F 1873
4 65 °F 1938
4 65 °F 1943
4 65 °F 1966
4 65 °F 1889
8 66 °F 1969
8 66 °F 1929
8 66 °F 1877
8 66 °F 1962
8 66 °F 1897
What's the most it has ever rained in Washington D.C. on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Washington D.C. history is 1.43 inches which happened in 1938.
All-Time Most Precipitation in Washington D.C. on September 20
Rank Precipitation Year
1 1.43 inches 1938
2 1.39 inches 1882
3 1.16 inches 1918
4 1.10 inches 1989
5 1.00 inches 1946
6 0.99 inches 1899
7 0.67 inches 1966
8 0.57 inches 1859
9 0.53 inches 1874
10 0.42 inches 2001
Weather Station Details
Years Station Coordinates
1945–2024 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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