NWS Boulder Denver Daily Normals and Records December

              National Weather Service - Denver, Colorado
               Temperature Normals & Extreme for December

     |Normal|Record| Year |Record| Year ||Normal|Record| Year |Record| Year |
DATE | High | High |  Set |Warmest Set  ||  Low |  Low |  Set |Coldest  Set |
     |      |      |      |Minimum      ||      |      |      |Maximum      |
-----|------|------|------|------|------||------|------|------|------|------|
  1  |  45  |  73  | 1973 |  43  | 1972 ||  19  | - 6  | 1985 |   7  | 1985 |
  2  |  45  |  74  | 1885 |  41  | 1926 ||  18  | - 4  | 1929^|   9  | 1919 |
  3  |  45  |  69^ | 2010 |  49  | 1941 ||  18  | - 3  | 1873 |  12  | 1873 |
  4  |  44  |  72  | 2007 |  45  | 1946 ||  18  | -13  | 2013 |   7  | 1909 |
  5  |  44  |  79# | 1939 |  42  | 1946 ||  18  | -15  | 2013^|   6  | 1972 | 

  6  |  44  |  73  | 1939 |  44  | 1939^||  18  | -17  | 1972 |   3  | 1972 |
  7  |  43  |  70  | 1906 |  39  | 1893^||  17  | -13  | 2005 |   3  | 2005 |
  8  |  43  |  73  | 1940 |  41  | 1874 ||  17  | -14  | 1919 |   4  | 1932^|
  9  |  43  |  71  | 1957 |  42  | 1996 ||  17  | -20  | 1919^| - 5  | 1932 |
 10  |  43  |  70  | 1939 |  46  | 1933 ||  17  | -18  | 1972 | - 1  | 1932 | 

 11  |  43  |  74  | 1939 |  44  | 1933 ||  17  | -13  | 1932 | - 6  | 1932 |
 12  |  42  |  69  | 2017^|  47  | 1921 ||  17  | -12  | 1961 |  16  | 1961^|
 13  |  42  |  72  | 1921 |  47  | 1921 ||  17  | -12  | 1961 |   6  | 1940 |
 14  |  42  |  70  | 2010 |  41  | 1946^||  17  | -18  | 2008 | - 1  | 1926 |
 15  |  42  |  68  | 1921 |  44  | 1924 ||  17  | -19  | 2008 |   2  | 2008 | 

 16  |  42  |  70  | 1980 |  49  | 1939 ||  17  | - 8  | 2008^|   9  | 1897 |
 17  |  42  |  73  | 1980 |  43  | 1939 ||  17  | -15  | 2016 |   3  | 2016 |
 18  |  42  |  68  | 2013 |  40  | 1917 ||  17  | -12  | 1909 |   5  | 1924 |
 19  |  42  |  67  | 1917 |  43  | 1917 ||  17  | -10  | 1989 |   7  | 1998 |
 20  |  42  |  69  | 1894 |  43  | 1933 ||  17  | -16  | 1990^| - 3  | 1990 |

 21  |  42  |  67  | 1933 |  43  | 1933 ||  17  | -21  | 1990^| - 8  | 1983 |
 22  |  42  |  70  | 1955 |  41  | 2005^||  17  | -25* | 1990 | - 5  | 1983 |
 23  |  42  |  74  | 1901 |  50  | 1955^||  17  | -17  | 1990 | - 5  | 1983 |
 24  |  42  |  70  | 1955 |  44  | 1922 ||  17  | -25* | 1876 | - 4  | 1983 |
 25  |  42  |  69  | 2005 |  45  | 1899 ||  17  | -15  | 1876 |  10  | 1876 |

 26  |  42  |  68  | 1980 |  39  | 1890 ||  17  | - 5  | 1982^|   6  | 1916 |
 27  |  43  |  75  | 1980 |  41  | 1980 ||  17  | -10  | 1904 |   9  | 1894 |
 28  |  43  |  65  | 1886 |  39  | 1936 ||  17  | -12  | 1983 |   5  | 1880 |
 29  |  43  |  68  | 1919 |  44  | 1919 ||  17  | -15  | 1983 |  11  | 1880 |
 30  |  43  |  71  | 1980 |  37  | 1919 ||  17  | -19  | 2014 |   1  | 2014 |
 31  |  43  |  66  | 2005 |  45  | 1881 ||  17  | -19  | 1900 | - 3  | 1927 |

The Normal High and Low Temperatures are calculated from 1981-2010 data.
             The Temperature Extremes range from 1872-2019.

^ - Also in previous years.

# - Highest Temperature of the Month:  79 degrees on 12/5/1939.

* - Lowest Temperature of the Month:  -25 on 12/24/1876 & 12/22/1990.

- The December Mean Temperature is 30.0 degrees (from 1981-2010 DIA 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: 1/2/2020