STATION:  BISBEE DOUGLAS INTL ARPT (KDUG), AZ

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        |  62.9  65.8  72.5  79.3  89.3  96.1  94.2  91.4  89.6  81.8  71.8  62.2 |   79.7
Avg Min Temp        |  29.7  32.3  37.2  43.4  52.6  61.4  66.7  65.0  59.9  47.8  36.2  28.4 |   46.7
Avg Temperature     |  46.3  49.0  54.9  61.3  70.9  78.8  80.4  78.2  74.8  64.8  54.0  45.3 |   63.2
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    82    84    88    97   105   106   108   103    99    95    87    84 |    108
                    |                                                                         |
    Date of Ext-Day |    17    24    17    26    31    29    09    10    07    13    01    03 |
               -Year|  2000  2008  2007  2000  2002  1998  2003  2003  2000  1998  1999  2000 |
                    |                                                                         |
    Extreme Min Temp|     9    13    14    21    36    45    53    55    45    30     5     8 |      5
                    |                                                                         |
    Date of Ext-Day |    15    01    03    05    02    05    01    31    15    31    26    29 |
               -Year|  2007  2002  2002  1999  1999  1999  2004  2000  2005  1999  2000  2003 |
                    |                                                                         |
Heating Degree Days |   581   451   315   137    10     0     0     0     0    74   332   611 |   2512
Cooling Degree Days |     0     0     1    28   194   413   479   409   293    67     1     0 |   1884
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.8  16.0  26.6  24.1  21.0  17.5   4.0   0.0   0.0 |  110.1
    Max Temp >= 75  |   1.8   4.1  15.5  23.0  30.5  29.9  31.0  30.9  29.8  26.9  12.6   1.3 |  237.3
    Max Temp <= 32  |   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
                    |                                                                         |
    Min Temp <= 32  |  20.5  15.5   7.5   2.0   0.0   0.0   0.0   0.0   0.0   0.4   8.7  22.1 |   76.6
    Min Temp <= 20  |   3.2   0.9   0.4   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   5.0 |    9.9
    Min Temp  <= 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 |    0.0
                    |                                                                         |
Avg Dew Point Temp  |  24.5  23.6  21.9  22.1  25.3  34.8  53.3  57.9  49.1  38.0  27.3  22.3 |   33.3
Avg Wet Bulb Temp   |  36.9  38.5  41.2  45.0  50.0  56.1  63.8  64.6  59.7  51.0  41.9  35.1 |   48.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.06 30.00 29.93 29.87 29.81 29.78 29.85 29.88 29.86 29.91 30.00 30.07 |  29.92
(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   |   0.4   0.8   0.6   0.6   2.2   5.2  16.0  16.1   5.8   2.6   0.8   0.2 |   51.5
    Heavy Fog       |   0.8   0.1   0.0   0.1   0.0   0.0   0.1   0.5   0.0   0.2   0.0   0.5 |    2.2
    Fog             |   2.6   1.8   1.1   0.8   0.1   0.4   1.6   2.6   1.7   2.1   1.4   1.7 |   17.8
    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     |  0.49  0.62  0.36  0.13  0.13  0.43  2.41  2.91  1.09  0.84  0.46  0.52 |  10.40
                    |                                                                         |
Maximum Daily       |  0.78  0.67  0.61  0.47  0.22  0.96  1.65  2.01  1.50  1.56  0.90  0.75 |   2.01
                    |                                                                         |
    Date of Ext-Day |    19    15    23    06    19    27    14    01    19    22    13    22 |
               -Year|  2007  1998  2007  2001  2001  2000  1999  2002  2004  2000  2003  1997 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   4.8   4.9   3.0   1.4   1.7   2.7  13.3  13.6   5.8   4.5   3.2   4.1 |   62.9
    >= 0.10         |   1.2   1.9   1.0   0.5   0.7   1.0   6.2   6.4   2.6   1.9   1.3   1.5 |   26.3
    >= 0.25         |   0.7   1.1   0.6   0.1   0.0   0.6   3.2   3.8   1.3   1.0   0.6   0.8 |   13.8
    >= 0.50         |   0.2   0.1   0.2   0.0   0.0   0.3   1.2   1.8   0.6   0.5   0.2   0.1 |    5.1
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.5   0.2   0.2   0.0   0.0 |    1.1
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   7.2   7.9   8.9   9.9   9.4   8.8   7.7   6.2   7.1   7.2   6.8   6.4 |    7.8
Daily Avg Max 2-Min |  18.7  21.0  22.9  25.0  24.2  24.5  25.9  22.1  19.7  19.3  18.0  17.6 |   21.6
Daily Avg Peak Gust |  22.7  25.9  28.7  32.0  31.1  31.4  32.3  27.4  24.8  24.5  22.3  21.3 |   27.0
                    |                                                                         |
Maximum Daily Avg   |  20.2  20.7  20.3  23.0  24.8  19.5  14.9  12.8  17.4  19.8  17.6  20.8 |   24.8
                    |                                                                         |
Maximum 2-Minute Avg|    38    40    39    46    45    47    49    46    45    36    33    41 |     49
                    |                                                                         |
Date of Max 2min-Day|    06    23    07    29    21    21    03    04    01    30    25    26 |
               -Year|  2003  2007  2001  2004  2008  2008  2008  2004  2004  2003  2001  2008 |
                    |                                                                         |
Maximum Peak Gust   |    44    49    51    56    58    59    75    54    58    41    45    62 |     75
                    |                                                                         |
Date of Max Gust-Day|    12    23    02    26    21    21    03    04    01    08    26    27 |
               -Year|  2001  2007  2008  2002  2008  2008  2008  2004  2004  2000  2005  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   7.3  10.0  13.8  17.4  17.6  16.8  18.6  10.5   7.0   8.1   6.5   6.7 |  140.4
   Peak Gust >=40   |   1.5   2.1   3.1   6.4   3.7   3.8   5.4   3.5   1.0   0.2   0.4   1.8 |   33.1
   Peak Gust >=50   |   0.0   0.0   0.1   0.9   0.5   0.6   1.5   0.5   0.1   0.0   0.0   0.2 |    4.5
                    |                                                                         |
   Max 2-Minute >=30|   2.3   3.6   6.2   7.9   5.8   5.8   7.8   5.3   2.0   1.5   1.8   0.0 |   50.0
   Max 2-Minute >=40|   0.0   0.3   0.0   1.3   0.4   0.6   1.5   0.8   0.2   0.0   0.0   0.0 |    5.0
                    |                                                                         |
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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.