SEPTEMBER TEMPERATURE NORMALS AND EXTREMES DENVER, COLORADO www.ErwinandBecky.com Centennial, CO 80111 UPDATED: 10/27/2007 --------------------------------------------------------------------------------------- NORMAL RECORD YEAR HIGHEST YEAR NORMAL RECORD YEAR LOWEST YEAR DATE HIGH HIGH SET MIN TEMP SET LOW LOW SET MAX TEMP SET --------------------------------------------------------------------------------------- Sep 01 82 97# 1995 65 1954^ 53 44 1962 57 1972 Sep 02 82 95 1983^ 67 1939 53 40 1952 52 1974 Sep 03 81 95 1995 67 1947 52 33 1961 46 1961 Sep 04 81 97# 1995^ 64 1995^ 52 40 1968^ 52 1929 Sep 05 81 97# 1899 66 1946 51 38 1962 51 1918 Sep 06 80 95 1959 66 1933 51 34 1929 45 1929 Sep 07 80 95 1933 63 1938^ 50 34 1928 41 1929 Sep 08 80 94 1959 64 1940^ 50 31 1962 42 1929 Sep 09 79 94 1994^ 63 1994^ 50 31 1962 53 1989 Sep 10 79 93 1998^ 66 2005 49 35 1898 42 1898 Sep 11 79 92 1951 65 1939^ 49 32 1898 41 1989 Sep 12 79 94 1911 64 1939^ 49 31 1902 40 1989 Sep 13 78 96 1990^ 62 1927 48 33 1993 49 1961 Sep 14 78 92 1948 63 1895^ 48 29 2003 43 1912 Sep 15 78 92 2000 61 1992^ 47 32 1912^ 47 1903 Sep 16 77 95 2000 63 1926 47 30 1965 48 1971^ Sep 17 77 95 2000 63 1925 47 30 1965 35 1971 Sep 18 77 93 1895 69 1947 46 23 1971 40 1971 Sep 19 76 93 1980 62 1947 46 20 1971 46 1965 Sep 20 76 92 1956 65 1941 46 28 1983 45 1965 Sep 21 76 88 1885 60 1926 45 27 1995^ 36 1995 Sep 22 75 89 1953 62 1884 45 27 1895 45 1941 Sep 23 75 90 1905^ 63 1934 44 29 1895 43 1965 Sep 24 75 89 1992 59 1949 44 29 2000^ 40 1913 Sep 25 74 91 1998 56 1981 44 25 1926 45 1934 Sep 26 74 90 1892 60 1948 43 28 1927 34 1927 Sep 27 74 92 1953 59 2001 43 21 1908 35 1936 Sep 28 73 89 1994^ 59 1931 43 21 1985 34 1984 Sep 29 73 92 1892 61 1981 42 17* 1985 29 1985 Sep 30 73 90 1980 62 1891 42 25 1985 36 1959 --------------------------------------------------------------------------------------- The Normal High and Low Temperatures are calculated from 1971-2000 data. The Temperature Extremes range from 1872-2007. ^ Also in previous years. # Highest Temperature of the Month: 97 degrees on 09/01/1995, 09/04/1995, 09/04/1960 and 09/05/1899 * Lowest Temperature of the Month: 17 degrees on 09/29/1985. - September Mean Temperature is 62.4 degrees (from 1971-2000 data). - Data collected at the Downtown City Office from 1872-December 1949, then at the Stapleton Airport Office January 1950-February 1995, then at Denver International Airport March 1995-Present.