STATION:  MERCURY-DESERT ROCK AIRPORT (KDRA), NV

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        |  56.2  58.5  67.6  72.9  85.0  94.9 101.1  98.6  89.7  77.7  64.9  54.8 |   76.8
Avg Min Temp        |  32.7  35.3  40.2  45.7  55.9  64.3  71.4  69.9  61.1  49.4  39.2  32.0 |   49.8
Avg Temperature     |  44.4  46.9  53.9  59.3  70.5  79.6  86.2  84.3  75.4  63.5  52.0  43.4 |   63.3
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    77    77    87    94   106   109   112   109   102    97    92    74 |    112
                    |                                                                         |
    Date of Ext-Day |    31    01    21    29    28    15    09    14    16    07    29    01 |
               -Year|  2003  2003  2004  2007  2003  2000  2002  2002  2000  1996  1999  1999 |
                    |                                                                         |
    Extreme Min Temp|    17    21    23    23    37    48    58    57    43    30    20    15 |     15
                    |                                                                         |
    Date of Ext-Day |    14    09    04    01    14    05    22    22    20    22    30    24 |
               -Year|  1997  2003  2002  1999  1998  1999  1999  2002  2004  1996  2004  1998 |
                    |                                                                         |
Heating Degree Days |   638   512   347   200    39     3     0     0     4   113   390   670 |   2914
Cooling Degree Days |     0     0     4    29   208   442   658   597   317    67     0     0 |   2322
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.8  11.3  23.6  30.2  29.3  17.5   2.7   0.1   0.0 |  115.5
    Max Temp >= 75  |   0.1   0.2   8.0  13.9  26.1  29.4  31.0  31.0  29.2  20.7   4.0   0.0 |  193.5
    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  |  15.7   9.0   4.3   0.9   0.0   0.0   0.0   0.0   0.0   0.2   4.4  17.6 |   52.1
    Min Temp <= 20  |   0.8   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.5 |    1.4
    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  |  21.6  22.6  22.5  24.8  27.6  30.0  39.9  39.3  34.7  27.8  23.7  19.7 |   27.8
Avg Wet Bulb Temp   |  35.4  37.4  40.6  44.2  50.5  55.2  60.9  59.7  54.7  46.8  40.0  34.2 |   46.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.09 30.03 29.96 29.90 29.83 29.82 29.80 29.81 29.85 29.94 30.04 30.11 |  29.93
(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   |   0.1   0.0   0.1   0.2   0.3   0.3   1.5   1.3   0.6   0.0   0.0   0.0 |    4.2
    Heavy Fog       |   0.3   0.1   0.3   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.9
    Fog             |   2.4   4.1   2.1   2.0   0.5   0.3   0.4   0.5   0.5   1.3   0.9   1.2 |   16.2
    Hail            |   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.42  1.25  0.56  0.45  0.13  0.20  0.30  0.27  0.60  0.38  0.39  0.38 |   5.33
                    |                                                                         |
Maximum Daily       |  0.46  2.10  1.31  0.76  0.40  0.68  0.77  0.86  1.86  1.41  0.58  1.01 |   2.10
                    |                                                                         |
    Date of Ext-Day |    11    23    28    14    12    12    30    20    21    20    01    29 |
               -Year|  2001  1998  2006  2003  1998  1998  2003  2003  2007  2004  2008  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   3.8   5.6   3.0   3.1   1.5   1.1   2.2   1.3   2.7   2.1   2.1   2.7 |   31.1
    >= 0.10         |   1.6   3.3   1.2   1.1   0.4   0.4   1.0   0.7   1.2   0.9   1.0   0.7 |   13.6
    >= 0.25         |   0.4   1.7   0.6   0.7   0.1   0.2   0.2   0.4   0.6   0.4   0.6   0.4 |    6.4
    >= 0.50         |   0.0   0.4   0.3   0.2   0.0   0.2   0.1   0.2   0.4   0.2   0.3   0.2 |    2.3
    >= 1.00         |   0.0   0.2   0.1   0.0   0.0   0.0   0.0   0.0   0.2   0.1   0.0   0.1 |    0.6
                    |                                                                         |
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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   8.5   8.7  10.2   9.8   9.7   9.0   8.8   8.4   7.8   7.4   7.9 |    8.7
Daily Avg Max 2-Min |  19.6  20.9  21.8  24.1  24.0  23.7  23.7  23.2  21.6  20.1  18.8  19.5 |   21.8
Daily Avg Peak Gust |  23.7  25.8  27.2  30.6  30.8  30.3  30.3  29.7  27.4  25.0  22.7  23.9 |   27.3
                    |                                                                         |
Maximum Daily Avg   |  22.9  24.7  26.6  24.8  25.9  22.6  19.2  18.3  22.0  22.1  27.1  23.3 |   27.1
                    |                                                                         |
Maximum 2-Minute Avg|    45    44    46    52    51    41    40    53    47    44    41    48 |     53
                    |                                                                         |
Date of Max 2min-Day|    28    06    25    15    11    30    26    13    06    05    08    03 |
               -Year|  2008  2001  2006  2002  2004  1997  1996  1998  2006  2007  2002  1998 |
                    |                                                                         |
Maximum Peak Gust   |    64    58    68    66    59    55    51    63    56    61    54    57 |     68
                    |                                                                         |
Date of Max Gust-Day|    28    03    25    15    10    30    26    13    06    05    08    03 |
               -Year|  2008  2008  2006  2002  2000  1997  1996  1998  2006  2007  2002  1998 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   6.1   8.4  10.0  14.6  16.8  16.4  17.2  16.5  10.6   8.1   5.2   6.6 |  136.7
   Peak Gust >=40   |   2.0   2.3   3.2   4.9   3.8   2.0   1.8   1.4   1.7   1.5   1.4   2.1 |   28.1
   Peak Gust >=50   |   0.3   0.7   0.7   0.6   0.6   0.2   0.1   0.2   0.2   0.2   0.1   0.7 |    4.6
                    |                                                                         |
   Max 2-Minute >=30|   3.5   3.5   4.5   6.7   5.1   3.2   3.6   2.2   2.5   3.1   2.3   0.0 |   40.2
   Max 2-Minute >=40|   0.2   0.7   0.7   0.6   0.7   0.3   0.1   0.2   0.2   0.2   0.1   0.0 |    3.8
                    |                                                                         |
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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.