NWS Boulder Denver Daily Normals and Records October

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

     |Normal|Record| Year |Record| Year ||Normal|Record| Year |Record| Year |
DATE | High | High |  Set |Warmest Set  ||  Low |  Low |  Set |coldest  Set |
     |      |      |      |Minimum      ||      |      |      |Maximum      |
-----|------|------|------|------|------||------|------|------|------|------|
  1  |  72  |  90# | 1892 |  59  | 1887 ||  42  |  27  | 1985 |  37  | 1959 |
  2  |  71  |  88  | 2005 |  59  | 1884 ||  42  |  26  | 2009 |  40  | 1902 |
  3  |  71  |  88  | 2005 |  60  | 1954 ||  41  |  31  | 2009^|  42  | 1986 |
  4  |  70  |  87  | 1997 |  58  | 1922 ||  41  |  28  | 1877 |  35  | 1969 |
  5  |  70  |  86  | 1997^|  55  | 1920 ||  41  |  20  | 1969 |  44  | 1969 |

  6  |  69  |  87  | 2020^|  55  | 1947 ||  40  |  26  | 1995 |  35  | 2000 |
  7  |  69  |  87  | 1934 |  55  | 2006 ||  40  |  23  | 1970 |  38  | 1970 |
  8  |  69  |  85  | 2020^|  54  | 1954^||  39  |  22  | 1970 |  39  | 1990 |
  9  |  68  |  87  | 1910 |  55  | 2020^||  39  |  18  | 2009 |  38  | 2018 |
 10  |  68  |  89  | 1910 |  56  | 1928 ||  39  |  13  | 2019 |  26  | 2009 |

 11  |  67  |  87  | 2015 |  57  | 1881 ||  38  |   9  | 2019 |  33  | 1986 |
 12  |  67  |  87  | 1991^|  55  | 1996 ||  38  |  10  | 1969 |  24  | 1969 |
 13  |  66  |  85  | 1962 |  56  | 1897 ||  38  |   3  | 1969 |  26  | 1969 |
 14  |  66  |  85  | 1962 |  56  | 1882 ||  37  |   4  | 1969 |  27  | 2018 |
 15  |  66  |  85  | 2016 |  54  | 1935 ||  37  |  18  | 2018 |  35  | 1984 |

 16  |  65  |  89  | 1991 |  54  | 1910 ||  37  |  15  | 1969 |  33  | 1969 |
 17  |  65  |  86  | 1926 |  56  | 1926 ||  36  |  18  | 1969 |  37  | 1989 |
 18  |  64  |  84  | 2009^|  54  | 1924 ||  36  |  19  | 1916 |  34  | 1908 |
 19  |  64  |  86  | 2003 |  52  | 1975^||  36  |  18  | 1916 |  31  | 1916 |
 20  |  64  |  83  | 1950 |  50  | 2012^||  35  |  21  | 1995 |  32  | 1911 |

 21  |  63  |  83  | 2003 |  54  | 1947 ||  35  |  17  | 1911 |  26  | 1906 |
 22  |  63  |  84  | 2003 |  52  | 1902 ||  35  |   8  | 1873 |  27  | 1906 |
 23  |  62  |  87  | 1973 |  49  | 2003 ||  34  |  16  | 1873 |  30  | 2002 |
 24  |  62  |  82  | 2014 |  49  | 1940^||  34  |   8  | 1887 |  24  | 1887 |
 25  |  62  |  84  | 2017 |  50  | 1894 ||  33  |   1  | 1873 |  21  | 1997^|

 26  |  61  |  83  | 1977 |  49  | 1927 ||  33  |   3  | 1997 |  16  | 2020 |
 27  |  61  |  83  | 2016 |  47  | 1933^||  33  |   8  | 2020 |  28  | 1911 |
 28  |  61  |  82  | 2016 |  55  | 2016 ||  32  |   9  | 1917 |  21  | 2019 |
 29  |  60  |  84  | 1950 |  48  | 1981^||  32  | - 2* | 1917 |  18  | 2019 |
 30  |  60  |  80  | 1950 |  49  | 1950 ||  32  |   3  | 2019 |  18  | 2002 |
 31  |  59  |  79  | 2016^|  51  | 1933 ||  31  |   7  | 2019 |  19  | 2002 |

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 10/1/1892.

* - Lowest Temperature of the Month:  - 2 degrees on 10/29/1917.

- The October Mean Temperature is 50.9 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: 10/27/2020