NWS Boulder Denver Daily Normals and Records April

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

     |Normal|Record| Year |Record| Year ||Normal|Record| Year |Record| Year |
DATE | High | High |  Set |Warmest Set  ||  Low |  Low |  Set |coldest  Set |
     |      |      |      |Minimum      ||      |      |      |Maximum      |
-----|------|------|------|------|------||------|------|------|------|------|
  1  |  58  |  84  | 2012 |  55  | 1946 ||  30  |  10  | 1975 |  18  | 1936 |
  2  |  59  |  84  | 2011 |  52  | 1889 ||  30  |  -2* | 1975 |  26  | 1999^|
  3  |  59  |  78  | 2021^|  54  | 1882 ||  31  |   7  | 1891 |  17  | 1945 |
  4  |  59  |  80  | 2021 |  54  | 1929 ||  31  |   6  | 1920 |  25  | 1983 |
  5  |  59  |  82  | 1991 |  45  | 2011^||  31  |  12  | 1983 |  27  | 1983 |

  6  |  59  |  83  | 1991 |  53  | 1893 ||  31  |   7  | 1983 |  28  | 1983 |
  7  |  59  |  82  | 1978 |  53  | 1890 ||  31  |   9  | 1957 |  23  | 1875 |
  8  |  60  |  81  | 1930 |  54  | 1930 ||  31  |   5  | 1973 |  29  | 1914 |
  9  |  60  |  81  | 1977 |  55  | 1907 ||  32  |   9  | 2013 |  22  | 2013 |
 10  |  60  |  80  | 1996^|  55  | 1896 ||  32  |   6  | 2013 |  20  | 1997 |

 11  |  60  |  80  | 1982^|  48  | 1967^||  32  |   8  | 1997^|  19  | 1997^|
 12  |  60  |  79  | 2018^|  51  | 1925 ||  32  |   6  | 1997 |  30  | 1997^|
 13  |  61  |  85  | 2006 |  53  | 1932 ||  33  |  15  | 2020 |  25  | 2020 |
 14  |  61  |  83  | 1963 |  56  | 1937 ||  33  |  11  | 2020 |  21  | 1945 |
 15  |  61  |  84  | 2002 |  57  | 2002 ||  33  |  18  | 1902^|  32  | 1945 |

 16  |  61  |  84  | 1985 |  52  | 1935 ||  33  |  19  | 2020 |  29  | 1922 |
 17  |  62  |  83  | 2006^|  53  | 1985 ||  34  |  12  | 2020 |  28  | 1944 |
 18  |  62  |  82  | 1987 |  54  | 1919 ||  34  |   8  | 1953 |  27  | 1920 |
 19  |  62  |  83  | 1961 |  51  | 2001 ||  34  |  13  | 1893 |  26  | 1966 |
 20  |  62  |  83  | 1989^|  52  | 1964^||  34  |  13  | 1966 |  31  | 1892 |

 21  |  63  |  89  | 1989 |  60  | 1932 ||  35  |  14  | 1907 |  32  | 1933 |
 22  |  63  |  88  | 1989 |  55  | 1989^||  35  |  21  | 2013 |  34  | 2001 |
 23  |  63  |  85  | 1989 |  55  | 1939 ||  35  |  17  | 1873 |  28  | 1873 |
 24  |  64  |  88  | 2012 |  53  | 1949 ||  35  |  15  | 1873 |  30  | 1873 |
 25  |  64  |  83  | 1987^|  56  | 1949 ||  36  |  20  | 1924 |  26  | 1924 |

 26  |  64  |  84  | 1981 |  53  | 1981^||  36  |  18  | 1924 |  33  | 1924 |
 27  |  65  |  84  | 1992 |  59  | 1876 ||  36  |  23  | 1994 |  33  | 1917 |
 28  |  65  |  86  | 1910 |  54  | 1927^||  37  |  24  | 1917 |  31  | 1917 |
 29  |  65  |  83  | 2018^|  54  | 2007^||  37  |  12  | 1877 |  28  | 1907 |
 30  |  66  |  90# | 1992 |  56  | 1992 ||  37  |  19  | 1909 |  33  | 2005 |
 
The Normal High and Low Temperatures are calculated from 1981-2010 data.
         The Temperature Extremes range from 1872-2020.

^ - Also in previous years.

# - Highest Temperature of the Month:  90 degrees on 4/30/1992.

* - Lowest Temperature of the Month:  - 2 degrees on 4/2/1975.

- The April Mean Temperature is 47.4 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:  4/9/2021