National Weather Service United States Department of Commerce

Dangerous Heat in the West; Flash Flooding Possible Across the Southern US

Dangerous heat is expected across areas in Texas and from Washington through California. Several daily high temperature records are expected to be either tied or broken in the West. Monsoonal showers and thunderstorms may result in flash flooding and debris flows over the Southwestern U.S. through Friday. Locally heavy rain is expected from thunderstorms in the Southeast. Read More >

July, August, September

 

Jump to:  August, September

July
Rank Warmest
(°F)
Years Rank Coldest
(°F)
Years Rank Wettest
(ins.)
Years Rank Driest
(ins.)
Years
1 84.3 1936 1 70.7 2009 1 10.15 1993 1 0.33 1988
2 82.7 1887 2 71.2 1971 2 9.18 1990 2 0.35 1991
3 (tie) 82.4 1901 3 71.3 1924 3 9.05 2020 3 0.46 1913
3 (tie) 82.4 2012 4 71.5 1909 4 8.72 1895 4 (tie) 0.47 1886
5 81.3 1893 5 (tie) 71.9 1915 5 8.42 1958 4 (tie) 0.47 1898
6 (tie) 81.0 1916 5 (tie) 71.9 1967 6 8.19 1992 6 0.50 1940
6 (tie) 81.0 1934 7 (tie) 72.0 1960 7 8.18 1948 7 0.57 1945
8 80.9 1955 7 (tie) 72.0 1962 8 7.64 1889 8 0.65 1955
9 80.7 2011 7 (tie) 72.0 1996 9 7.53 1982 9 0.72 1890
10 80.3 1885 10 72.1 1905 10 7.25 1902 10 0.79 1946

 


 

August
Rank Warmest
(°F)
Years Rank Coldest
(°F)
Years Rank Wettest
(ins.)
Years Rank Driest
(ins.)
Years
1 82.0 1947 1 67.2 1915 1 8.61 1965 1 0.25 1992
2 80.8 1983 2 (tie) 68.1 1967 2 8.56 1954 2 0.33 2013
3 80.5 1900 2 (tie) 68.1 2004 3 7.45 2016 3 0.44 1893
4 80.3 1936 4 (tie) 68.5 1927 4 7.42 1902 4 0.57 1883
5 79.4 1995 4 (tie) 68.5 1992 5 7.38 1993 5 0.59 2020
6 78.9 1886 6 68.9 1986 6 7.28 1977 6 0.68 1010
7 78.5 1988 7 69.0 1950 7 7.22 1903 7 0.72 1922
8 (tie) 78.3 1937 8 69.9 1946 8 7.15 1924 8 0.73 1892
8 (tie) 78.3 2007 9 (tie) 70.2 1966 9 6.94 2014 9 0.78 1984
10 (tie) 77.8 1913, 1959 9 (tie) 70.2 1985 10 6.79 1926 10 0.79 1909

 


 

September
Rank Warmest
(°F)
Years Rank Coldest
(°F)
Years Rank Wettest
(ins.)
Years Rank Driest
(ins.)
Years
1 73.5 2015 1 58.2 1918 1 13.09 1961 1 0.03 1979
2 73.4 1884 2 60.4 1949 2 12.34 2008 2 0.41 1956
3 73.0 1931 3 60.5 1924 3 12.30 1911 3 0.54 2017
4 72.6 1933 4 60.9 1975 4 11.55 1926 4 0.78 2002
5 72.2 2019 5 61.1 1974 5 11.49 1970 5 0.82 1908
6 (tie) 71.8 1897 6 61.3 1928 6 10.58 1936 6 0.85 1939
6 (tie) 71.8 1939 7 61.4 1993 7 8.17 1965 7 0.88 1943
8 71.7 1925 8 62.0 1943 8 7.68 2019 8 (tie) 0.93 1954
9 71.6 2005 9 62.2 1989 9 7.58 1973 8 (tie) 0.93 1897
10 (tie) 71.2 1891, 2016 10 62.3 1951 10 7.56 1993 10 0.99 2004

Records began in 1883.