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