STATION:  DURANGO-LA PLATA CO AIRPORT (KDRO), CO

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1996 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        |  38.5  42.5  52.9  61.2  72.3  82.8  87.4  83.5  75.7  63.3  50.8  39.7 |   62.6
Avg Min Temp        |  11.5  15.8  22.4  28.3  35.4  42.5  53.0  51.8  42.4  31.4  21.9  12.9 |   30.8
Avg Temperature     |  25.0  29.2  37.6  44.7  53.8  62.6  70.2  67.7  59.1  47.4  36.4  26.3 |   46.7
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    59    63    76    80    94    96    98    94    89    81    70    65 |     98
                    |                                                                         |
    Date of Ext-Day |    19    28    20    27    31    29    02    04    16    01    06    22 |
               -Year|  2000  1999  2004  2000  2002  1998  2002  2000  2000  2003  1999  1996 |
                    |                                                                         |
    Extreme Min Temp|   -19   -14    -8     7    20    24    33    38    22    10     0   -18 |    -19
                    |                                                                         |
    Date of Ext-Day |    31    13    01    05    03    05    02    25    29    22    17    27 |
               -Year|  2008  2004  1997  1999  2008  1999  1997  2002  1999  1996  2000  2008 |
                    |                                                                         |
Heating Degree Days |  1239  1012   849   609   348   106     5    12   184   547   859  1199 |   6969
Cooling Degree Days |     0     0     0     0     2    35   166    94     7     0     0     0 |    304
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.3   4.6  11.9   3.7   0.0   0.0   0.0   0.0 |   20.5
    Max Temp >= 75  |   0.0   0.0   0.2   1.1  14.0  26.3  30.1  29.6  19.4   3.3   0.0   0.0 |  124.0
    Max Temp <= 32  |   7.4   2.7   0.6   0.2   0.0   0.0   0.0   0.0   0.0   0.0   1.3   6.1 |   18.3
                    |                                                                         |
    Min Temp <= 32  |  30.8  27.9  29.7  22.9   9.9   1.7   0.0   0.0   2.2  18.2  28.7  30.8 |  202.6
    Min Temp <= 20  |  24.2  18.2  10.4   2.8   0.1   0.0   0.0   0.0   0.0   1.6  12.2  23.9 |   93.3
    Min Temp  <= 0  |   5.0   2.5   0.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   2.5 |   10.6
                    |                                                                         |
Avg Dew Point Temp  |  16.7  17.8  20.5  22.0  27.5  31.5  44.6  46.2  38.1  29.2  21.5  15.9 |   27.6
Avg Wet Bulb Temp   |  22.3  25.2  30.9  35.6  42.4  47.9  55.3  55.2  48.1  38.8  29.9  22.4 |   37.8
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.23 30.14 30.05 29.95 29.92 29.91 29.97 30.01 30.01 30.08 30.17 30.22 |  30.06
(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   0.3   0.6   2.2   3.8   3.8   8.0   8.2   3.8   3.1   0.3   0.0 |   34.0
    Heavy Fog       |   4.2   4.4   2.9   0.9   0.6   0.0   0.2   0.1   0.4   0.9   1.8   2.7 |   19.1
    Fog             |  11.3   9.3   8.1   6.1   2.4   1.2   3.6   5.4   5.2   7.2   6.8   7.9 |   74.4
    Hail            |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  1.31  1.27  1.03  1.05  0.33  0.24  1.11  1.74  1.52  1.36  0.95  0.73 |  12.63
                    |                                                                         |
Maximum Daily       |  0.62  0.83  0.88  1.65  0.70  0.64  0.87  1.08  1.04  0.83  0.79  0.79 |   1.65
                    |                                                                         |
    Date of Ext-Day |    11    08    07    03    03    28    23    02    11    23    13    29 |
               -Year|  2005  2001  2001  2004  2001  2004  2007  2003  2002  2000  2003  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   8.1   7.7   7.9   5.8   3.6   3.1   8.6  12.3   7.6   8.6   5.6   5.2 |   84.1
    >= 0.10         |   4.6   3.1   3.3   2.4   1.0   0.8   3.2   4.7   3.9   3.7   2.4   1.9 |   35.0
    >= 0.25         |   1.7   2.0   1.4   0.9   0.2   0.1   1.8   2.0   2.1   1.9   1.4   0.8 |   16.4
    >= 0.50         |   0.5   0.6   0.3   0.7   0.1   0.1   0.1   0.9   1.0   0.9   0.5   0.3 |    6.0
    >= 1.00         |   0.0   0.0   0.0   0.2   0.0   0.0   0.0   0.1   0.1   0.0   0.0   0.0 |    0.4
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   4.6   5.5   6.5   7.7   7.3   7.0   5.9   5.6   5.4   5.6   4.8   4.5 |    5.9
Daily Avg Max 2-Min |  13.6  16.7  20.4  23.2  23.4  23.1  22.5  21.4  19.7  18.1  14.9  14.0 |   19.3
Daily Avg Peak Gust |  16.3  20.4  25.4  29.8  30.0  29.4  28.5  26.9  25.0  22.7  18.4  16.9 |   24.1
                    |                                                                         |
Maximum Daily Avg   |  13.5  17.0  18.1  17.7  17.3  17.3  11.6  11.1  12.5  15.0  14.4  16.8 |   18.1
                    |                                                                         |
Maximum 2-Minute Avg|    43    41    47    46    40    43    41    39    40    39    41    39 |     47
                    |                                                                         |
Date of Max 2min-Day|    28    15    22    18    11    06    18    10    07    20    14    17 |
               -Year|  2008  2006  2006  2000  2004  2007  1998  1997  2002  2007  2006  2000 |
                    |                                                                         |
Maximum Peak Gust   |    55    52    61    60    53    54    77    48    58    53    54    48 |     77
                    |                                                                         |
Date of Max Gust-Day|    28    15    30    18    23    03    03    18    07    11    11    15 |
               -Year|  2008  2006  2008  2000  1999  1998  2008  2002  2002  2008  2005  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   2.4   4.7   8.9  14.0  15.8  12.9  11.9   9.5   7.5   6.4   3.1   2.9 |   99.9
   Peak Gust >=40   |   0.1   0.8   1.9   3.8   2.8   2.3   2.3   1.5   1.2   1.1   0.5   1.1 |   19.2
   Peak Gust >=50   |   0.1   0.1   0.3   0.8   0.4   0.3   0.4   0.0   0.1   0.1   0.2   0.0 |    2.5
                    |                                                                         |
   Max 2-Minute >=30|   0.7   1.6   3.2   5.3   3.8   4.0   4.4   2.5   2.0   1.6   0.8   0.0 |   29.9
   Max 2-Minute >=40|   0.1   0.1   0.3   0.3   0.1   0.2   0.3   0.0   0.1   0.0   0.2   0.0 |    1.6
                    |                                                                         |
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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.