STATION:  DENVER-CENTENNIAL AIRPORT (KAPA), CO

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1998 to Dec 2008

Summaries based on unedited daily ASOS data.  Errors may be present.

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TEMPERATURE (F)     |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Avg Max Temp        |  44.4  46.3  53.4  60.5  70.2  80.9  88.7  83.8  76.3  64.6  53.1  43.9 |   63.8
Avg Min Temp        |  19.0  20.0  26.7  33.4  42.2  51.0  59.0  56.4  47.2  36.1  26.4  18.6 |   36.3
Avg Temperature     |  31.7  33.2  40.1  47.0  56.2  66.0  73.9  70.1  61.7  50.3  39.8  31.2 |   50.1
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    69    75    77    83    93    98   101   100    92    85    77    71 |    101
                    |                                                                         |
    Date of Ext-Day |    07    28    22    15    29    01    20    01    04    19    08    01 |
               -Year|  2006  2006  2004  2002  2003  2002  2005  2008  1998  2003  2006  1998 |
                    |                                                                         |
    Extreme Min Temp|   -10   -10    -9    12    24    34    37    42    26    13    -8   -14 |    -14
                    |                                                                         |
    Date of Ext-Day |    13    02    02    03    21    08    11    28    29    30    23    23 |
               -Year|  2007  2007  2002  1999  2001  2007  2007  2004  1999  2002  2003  1998 |
                    |                                                                         |
Heating Degree Days |  1032   900   771   541   289    73     4    15   147   456   757  1047 |   6031
Cooling Degree Days |     0     0     0     0    16   102   279   173    49     2     0     0 |    621
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.5   6.3  15.6   5.7   1.0   0.0   0.0   0.0 |   29.2
    Max Temp >= 75  |   0.0   0.1   0.6   3.8  12.5  22.2  30.2  28.0  18.5   7.1   0.7   0.0 |  123.7
    Max Temp <= 32  |   5.2   4.0   1.9   0.6   0.0   0.0   0.0   0.0   0.0   0.4   2.8   5.5 |   20.4
                    |                                                                         |
    Min Temp <= 32  |  29.6  26.9  24.2  13.5   3.7   0.0   0.0   0.0   0.8   9.3  21.6  29.3 |  158.8
    Min Temp <= 20  |  15.9  12.7   5.5   1.1   0.0   0.0   0.0   0.0   0.0   0.5   6.5  15.9 |   58.0
    Min Temp  <= 0  |   1.2   1.2   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   1.5 |    4.5
                    |                                                                         |
Avg Dew Point Temp  |  13.6  14.3  19.7  25.2  35.4  41.2  47.2  48.3  38.3  28.3  18.3  13.5 |   28.6
Avg Wet Bulb Temp   |  25.3  26.3  32.0  37.7  46.0  52.7  58.2  57.1  49.3  40.0  31.2  24.8 |   40.1
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.10 30.07 30.07 30.07 30.00 29.96 29.94 29.98 30.00 30.04 30.10 30.10 |  30.04
(Inches of Mercury) |                                                                         |
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                    |                                                                         |
WEATHER             |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
See disclaimer below|                                                                         |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Thunderstorms   |   0.0   0.0   0.5   1.6   5.9   9.2   9.3  10.5   4.0   0.8   0.0   0.2 |   41.9
    Heavy Fog       |   1.9   2.4   2.4   2.0   0.9   0.2   0.3   0.3   0.4   1.4   1.6   1.0 |   14.7
    Fog             |   7.5   8.6   9.2   9.4   7.5   4.8   4.8   4.8   4.7   7.0   6.2   5.5 |   80.0
    Hail            |   0.0   0.0   0.6   0.7   0.7   1.0   0.3   1.1   0.1   0.3   0.2   0.0 |    4.9
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.46  0.40  0.89  2.21  1.74  1.55  2.15  3.06  0.90  1.03  0.55  0.46 |  15.41
                    |                                                                         |
Maximum Daily       |  0.43  0.29  0.66  2.23  1.67  1.04  1.58  3.27  0.84  0.92  0.42  0.88 |   3.27
                    |                                                                         |
    Date of Ext-Day |    29    06    17    24    05    03    16    18    18    26    23    20 |
               -Year|  2001  2004  2003  2007  2001  2002  2000  2004  2002  2006  1999  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   4.5   4.9   7.5   9.9   8.3   7.3   8.3  11.8   6.5   6.5   4.9   4.2 |   84.5
    >= 0.10         |   1.4   1.8   2.5   4.8   4.5   3.7   4.7   5.5   2.7   3.0   2.2   1.1 |   37.9
    >= 0.25         |   0.6   0.2   1.1   2.3   2.2   2.6   2.5   3.6   0.9   1.2   0.5   0.5 |   18.2
    >= 0.50         |   0.0   0.0   0.3   0.9   1.1   0.7   1.7   1.5   0.4   0.5   0.0   0.2 |    7.1
    >= 1.00         |   0.0   0.0   0.0   0.5   0.1   0.1   0.4   0.5   0.0   0.0   0.0   0.0 |    1.6
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   7.9   8.3   8.8  10.0   8.8   8.8   8.2   7.9   8.0   7.6   7.6   8.0 |    8.3
Daily Avg Max 2-Min |  19.1  19.9  21.7  24.0  22.7  23.5  23.1  22.0  20.4  18.8  18.1  19.4 |   21.1
Daily Avg Peak Gust |  22.7  23.9  26.5  29.4  28.2  29.6  28.7  27.3  25.3  22.8  21.5  23.3 |   25.8
                    |                                                                         |
Maximum Daily Avg   |  19.5  22.4  21.4  23.2  23.3  19.3  13.1  15.6  17.5  18.1  18.4  21.3 |   23.3
                    |                                                                         |
Maximum 2-Minute Avg|    44    45    45    52    43    44    40    46    43    44    40    45 |     52
                    |                                                                         |
Date of Max 2min-Day|    06    09    08    08    22    25    08    27    04    15    14    17 |
               -Year|  2007  2002  2005  2005  2006  2007  2001  2002  2000  2001  2006  2000 |
                    |                                                                         |
Maximum Peak Gust   |    56    55    54    59    54    61    53    87    53    62    47    56 |     87
                    |                                                                         |
Date of Max Gust-Day|    06    09    08    08    14    07    07    02    04    01    14    23 |
               -Year|  2007  2002  2005  2005  2007  2002  2004  2000  2000  1998  2006  2005 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   5.8   6.9   9.7  13.5  11.3  13.8  12.7  10.1   8.8   6.1   4.5   6.8 |  110.0
   Peak Gust >=40   |   1.9   1.6   2.3   4.3   3.3   3.5   2.7   1.8   2.0   1.4   0.8   2.1 |   27.7
   Peak Gust >=50   |   0.3   0.3   0.3   0.6   0.5   0.8   0.4   0.6   0.3   0.1   0.0   0.4 |    4.5
                    |                                                                         |
   Max 2-Minute >=30|   2.9   3.1   3.8   7.0   4.5   4.7   4.3   2.9   2.8   2.3   1.4   0.0 |   39.7
   Max 2-Minute >=40|   0.2   0.5   0.2   0.6   0.4   0.2   0.1   0.3   0.3   0.1   0.1   0.0 |    2.9
                    |                                                                         |
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies.  Average days
with Thunderstorms may be low due to early mis-detection.

Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.

Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.