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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

            NATIONAL WEATHER SERVICE - DENVER, COLORADO
            TEMPERATURE NORMALS AND EXTREMES FOR AUGUST
                                                                     
     |NORMAL|RECORD| YEAR |RECORD| YEAR ||NORMAL|RECORD| YEAR |RECORD| YEAR |
DATE | HIGH | HIGH |  SET |WARMEST  SET ||  LOW |  LOW |  SET |COLDEST  SET |
     |      |      |      |MINIMUM      ||      |      |      |MAXIMUM      |
-----|------|------|------|------|------||------|------|------|------|------|
  1  |  90  | 104  | 2008 |  70  | 1980^||  60  |  42  | 1995 |  66  | 1999 |
  2  |  89  | 103  | 2008 |  70  | 2008 ||  60  |  50  | 1891 |  63  | 1976 |
  3  |  89  | 100  | 1878 |  68  | 1981^||  60  |  48  | 1911 |  59  | 1978 |
  4  |  89  |  98  | 1981^|  70  | 1960^||  60  |  50  | 1978 |  61  | 2005 |
  5  |  89  |  99  | 1877 |  76  | 1881 ||  60  |  48  | 1978 |  70  | 1936 |

  6  |  89  | 100  | 1980 |  72  | 1938 ||  60  |  48  | 1887 |  64  | 1997^|
  7  |  89  |  99  | 1980 |  71  | 1995 ||  60  |  50  | 1971 |  65  | 1939 |
  8  |  89  | 105# | 1878 |  72  | 1881 ||  60  |  49  | 1904 |  63  | 1927 |
  9  |  89  |  98  | 2020^|  71  | 2006 ||  59  |  45  | 1872 |  59  | 1884 |
 10  |  88  | 100  | 1962 |  68  | 2006^||  59  |  45  | 1974 |  58  | 1968 |

 11  |  88  |  97  | 2020^|  69  | 1943 ||  59  |  48  | 1872 |  64  | 1908 |
 12  |  88  | 100  | 1876 |  69  | 1934 ||  59  |  49  | 2004 |  65  | 1920 |
 13  |  88  |  99  | 2007 |  69  | 1938 ||  59  |  48  | 2004 |  63  | 2005 |
 14  |  88  | 100  | 1962 |  68  | 1958^||  59  |  49  | 1976 |  62  | 1979 |
 15  |  88  |  98  | 1960 |  69  | 1933 ||  59  |  44  | 1978 |  59  | 2008 |

 16  |  87  | 100  | 2002 |  68  | 1874 ||  58  |  47  | 2009^|  58  | 2008 |
 17  |  87  |  98  | 2020 |  68  | 1949 ||  58  |  44  | 1960 |  66  | 1910 |
 18  |  87  | 100  | 2020 |  67  | 2020^||  58  |  47  | 2015^|  65  | 1978 |
 19  |  87  |  99  | 2019 |  67  | 1948 ||  58  |  47  | 2015 |  61  | 1908^|
 20  |  87  |  99  | 2013 |  70  | 2013 ||  58  |  46  | 2018^|  58  | 1920 |

 21  |  87  |  97  | 2007^|  67  | 1946^||  57  |  45  | 1974 |  59  | 1945 |
 22  |  86  |  98  | 1960 |  69  | 1960 ||  57  |  40* | 1904 |  60  | 1896 |
 23  |  86  |  98  | 2020^|  67  | 1949 ||  57  |  41  | 1964 |  64  | 1987^|
 24  |  86  |  98  | 2020^|  69  | 1937 ||  57  |  40* | 1910 |  58  | 1992 |
 25  |  86  |  99  | 2011 |  69  | 1881 ||  56  |  40* | 1910 |  65  | 1885 |

 26  |  86  |  97  | 2020^|  66  | 1988 ||  56  |  40* | 1910 |  66  | 1891 |
 27  |  85  |  98  | 2012^|  66  | 1994 ||  56  |  48  | 2016^|  55  | 2004 |
 28  |  85  |  96  | 2012^|  66  | 2011 ||  55  |  42  | 2004 |  59  | 1892 |
 29  |  85  |  97  | 2012 |  67  | 1948 ||  55  |  44  | 1962 |  55  | 1946 |
 30  |  85  |  98  | 1990 |  70  | 2013 ||  55  |  42  | 1968 |  59  | 1882 |
 31  |  84  |  98  | 2011^|  66  | 1985 ||  54  |  43  | 1962 |  62  | 1882 |

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: 105 degrees on 8/8/1878
      (Also ties for Highest Temperature in Denver with 7/20/2005, 6/25/2012
                                                               and 6/26/2012)

* - Lowest Temperature of the Month:  40 degrees on 8/22/1904, 8/24/1910, 
                                                8/25/1910, and 8/26/1910.

- The August Mean Temperature is 72.5 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 the
Denver International Airport from March 1995-Present.

UPDATED: 8/27/2020