National Weather Service - Denver, Colorado Temperature Normals & Extreme for January |Normal|Record| Year |Record| Year ||Normal|Record| Year |Record| Year | DATE | High | High | Set |Warmest Set || Low | Low | Set |coldest Set | | | | |Minimum || | | |Maximum | -----|------|------|------|------|------||------|------|------|------|------| 1 | 43 | 67 | 1882 | 42 | 1918 || 17 | -19 | 1901 | 2 | 1942 | 2 | 43 | 72 | 1997 | 42 | 1893 || 17 | -17 | 1911 | 5 | 1911 | 3 | 43 | 65 | 1918^| 40 | 1918^|| 17 | -17 | 1974 | - 1 | 1959 | 4 | 43 | 67 | 1956^| 52 | 1893 || 17 | -16 | 1974^| 2 | 1942 | 5 | 43 | 72 | 1956^| 44 | 1927 || 18 | -17 | 1974 | 4 | 1974 | 6 | 44 | 66 | 2006^| 37 | 1923^|| 18 | -21 | 1913 | - 8 | 1913 | 7 | 44 | 69 | 2006^| 42 | 1923^|| 18 | -18 | 1913 | - 8 | 1937 | 8 | 44 | 69 | 1956^| 39 | 1885 || 18 | -19 | 1886 | 3 | 1937 | 9 | 44 | 72 | 1953 | 43 | 1917 || 18 | -29* | 1875 | - 1 | 1962 | 10 | 44 | 71 | 1990 | 40 | 1928^|| 18 | -24 | 1962 | 1 | 1918 | 11 | 44 | 67 | 1936 | 40 | 1928 || 18 | -25 | 1963 | - 9 | 1963 | 12 | 44 | 70 | 1953 | 47 | 1881 || 18 | -25 | 1963 | - 1 | 1997^| 13 | 44 | 69 | 1996 | 41 | 1936^|| 18 | -20 | 1875 | - 2 | 1875 | 14 | 44 | 65 | 1938^| 44 | 1943 || 18 | -18 | 1888 | - 4 | 1888 | 15 | 44 | 68 | 1912 | 47 | 1921 || 18 | -20 | 1888 | 2 | 1930^| 16 | 44 | 64 | 1923 | 47 | 1894 || 18 | -19 | 1930 | 0 | 1886 | 17 | 44 | 65 | 1971 | 40 | 1923^|| 18 | -20 | 1930 | - 2 | 1886 | 18 | 44 | 65 | 2018^| 38 | 1920^|| 18 | -19 | 1984 | 4 | 1943 | 19 | 44 | 68 | 1986^| 47 | 1906 || 17 | -20 | 1883 | - 9 | 1883 | 20 | 44 | 70 | 2005 | 41 | 1986^|| 17 | -18 | 1883 | - 2 | 1935 | 21 | 44 | 71 | 2009 | 46 | 1943 || 17 | -15 | 1930 | - 1 | 1937 | 22 | 44 | 68 | 1981 | 42 | 1943^|| 17 | -14 | 1962 | 11 | 1962 | 23 | 44 | 69 | 1981 | 42 | 1943 || 17 | -15 | 1877 | 9 | 1894 | 24 | 44 | 68 | 1970 | 41 | 1953 || 17 | -18 | 1872 | - 4 | 1872 | 25 | 44 | 72 | 1890 | 48 | 1890 || 17 | -20 | 1872 | 3 | 1897 | 26 | 44 | 73 | 1982 | 47 | 1888 || 17 | -20 | 1902 | 2 | 1897 | 27 | 44 | 76# | 1888 | 42 | 2015 || 17 | -14 | 1897 | 5 | 1895 | 28 | 44 | 69 | 1888 | 38 | 1927 || 17 | -22 | 1872 | 4 | 1951^| 29 | 44 | 67 | 1920 | 39 | 1884 || 17 | -12 | 1951^| - 4 | 1951 | 30 | 44 | 71 | 1888 | 45 | 1971^|| 17 | -10 | 1985^| 5 | 1918 | 31 | 44 | 70 | 1954 | 47 | 1911 || 17 | -24 | 1951 | 2 | 1951 | The Normal High and Low Temperatures are calculated from 1981-2010 data. The Temperature Extremes range from 1872-2021. ^ - Also in previous years. # - Highest Temperature of the Month: 76 degrees on 1/27/1888. * - Lowest Temperature of the Month: -29 degrees on 1/9/1875. (Also the lowest Temperature in Denver history.) - The January Mean Temperature is 30.7 degrees (from 1981-2010 data). - Data collected at the Downtown City Office from 1872-December 1949, then at the Stapleton Airport Office from January 1950-February 1995, then at Denver International Airport from March 1995-Present. UPDATED: 1/31/2021