STATION:  TONOPAH AIRPORT (KTPH), 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        |  45.4  47.7  58.3  62.9  75.3  85.2  92.6  90.2  80.5  68.3  55.1  44.5 |   67.2
Avg Min Temp        |  20.8  24.1  28.7  34.1  43.7  51.8  58.4  56.1  48.0  37.5  27.9  19.2 |   37.5
Avg Temperature     |  33.1  35.9  43.5  48.5  59.5  68.5  75.5  73.2  64.3  52.9  41.5  31.8 |   52.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    65    67    79    85    96    99   103   100    95    87    80    63 |    103
                    |                                                                         |
    Date of Ext-Day |    30    23    20    14    28    25    23    10    02    01    06    17 |
               -Year|  2003  2002  2004  2002  2003  2006  1996  1996  2007  2001  2001  1998 |
                    |                                                                         |
    Extreme Min Temp|    -9     6     9    16    22    33    40    41    33    13     7    -5 |     -9
                    |                                                                         |
    Date of Ext-Day |    06    16    04    10    01    04    01    08    17    10    30    20 |
               -Year|  2005  2006  2006  1999  2008  1999  1997  1999  1996  2000  2006  2006 |
                    |                                                                         |
Heating Degree Days |   990   822   667   494   205    47     1     2    83   376   704  1028 |   5419
Cooling Degree Days |     0     0     0     0    35   152   327   256    62     1     0     0 |    832
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   1.9  11.6  23.0  18.7   1.4   0.0   0.0   0.0 |   56.7
    Max Temp >= 75  |   0.0   0.0   1.2   4.5  17.7  26.4  30.8  30.7  23.6   8.2   0.2   0.0 |  143.3
    Max Temp <= 32  |   2.8   0.4   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.5   2.3 |    6.1
                    |                                                                         |
    Min Temp <= 32  |  30.0  27.0  22.5  13.0   1.8   0.0   0.0   0.0   0.0   5.6  23.0  30.3 |  153.3
    Min Temp <= 20  |  14.9   8.2   3.3   0.3   0.0   0.0   0.0   0.0   0.0   0.1   4.2  18.0 |   48.9
    Min Temp  <= 0  |   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2 |    0.5
                    |                                                                         |
Avg Dew Point Temp  |  17.7  18.8  18.0  20.3  23.8  24.8  35.3  32.0  25.8  22.4  19.4  16.4 |   22.9
Avg Wet Bulb Temp   |  26.6  29.2  33.3  37.1  44.0  48.7  55.1  52.5  45.7  39.5  32.5  25.7 |   39.2
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.18 30.09 30.03 29.94 29.89 29.86 29.86 29.88 29.94 30.02 30.14 30.17 |  30.00
(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   0.2   0.3   0.6   1.7   1.6   4.3   2.8   1.8   0.5   0.2   0.2 |   14.5
    Heavy Fog       |   0.8   0.9   0.5   0.8   0.0   0.0   0.0   0.0   0.0   0.2   0.2   0.7 |    4.1
    Fog             |   2.8   3.6   2.1   2.7   0.6   0.1   0.5   0.4   0.4   1.1   1.5   2.4 |   18.1
    Hail            |   0.0   0.0   0.0   0.0   0.1   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     |  0.43  0.64  0.28  0.45  0.38  0.32  0.43  0.49  0.28  0.34  0.30  0.25 |   4.60
                    |                                                                         |
Maximum Daily       |  0.57  0.48  0.42  0.49  0.61  0.96  0.70  1.29  0.62  0.51  0.48  0.39 |   1.29
                    |                                                                         |
    Date of Ext-Day |    24    23    19    14    25    02    16    30    05    10    26    22 |
               -Year|  1999  1998  2003  2006  2008  1999  1999  2000  1998  2000  2008  1996 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   4.2   5.2   2.7   4.5   3.1   2.3   3.2   2.7   2.0   1.8   2.1   2.5 |   36.1
    >= 0.10         |   1.2   2.3   0.9   1.8   1.2   0.8   1.5   1.2   1.0   1.0   0.9   0.8 |   14.7
    >= 0.25         |   0.7   0.8   0.4   0.5   0.6   0.3   0.7   0.6   0.3   0.5   0.4   0.3 |    5.9
    >= 0.50         |   0.1   0.0   0.0   0.0   0.2   0.2   0.1   0.2   0.2   0.3   0.0   0.0 |    1.1
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   9.0   9.4  10.6  11.6  10.4  10.4   8.7   8.7   8.9   9.0   8.8   8.3 |    9.5
Daily Avg Max 2-Min |  19.7  20.8  22.9  25.5  24.0  24.0  23.8  21.9  21.0  19.8  19.8  19.2 |   21.9
Daily Avg Peak Gust |  23.0  24.8  27.7  31.1  29.9  30.2  29.7  27.5  26.2  24.0  23.2  22.4 |   26.6
                    |                                                                         |
Maximum Daily Avg   |  22.5  24.1  27.4  22.7  22.5  22.7  16.5  17.1  19.1  19.8  20.7  26.0 |   27.4
                    |                                                                         |
Maximum 2-Minute Avg|    44    45    46    46    52    44    43    37    43    43    39    44 |     52
                    |                                                                         |
Date of Max 2min-Day|    02    13    03    28    10    22    04    19    15    20    13    13 |
               -Year|  2006  2008  2006  2004  2004  2001  2006  2004  2006  2007  2001  2008 |
                    |                                                                         |
Maximum Peak Gust   |    51    58    56    56    60    55    52    48    58    51    51    53 |     60
                    |                                                                         |
Date of Max Gust-Day|    02    13    28    11    10    04    06    05    15    20    14    27 |
               -Year|  2006  2008  2007  2007  2004  2008  2007  2005  2006  2007  2006  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   7.1   8.0  11.0  16.2  14.6  14.2  15.1  10.5   9.7   7.4   7.8   6.2 |  127.8
   Peak Gust >=40   |   1.4   2.3   2.2   5.6   3.5   3.3   1.8   1.2   1.9   1.0   1.0   1.8 |   27.1
   Peak Gust >=50   |   0.2   0.3   0.4   0.8   0.8   0.6   0.3   0.0   0.3   0.1   0.1   0.2 |    4.0
                    |                                                                         |
   Max 2-Minute >=30|   3.1   3.6   5.2   7.9   6.0   5.2   4.5   2.6   2.9   2.7   3.4   0.0 |   47.3
   Max 2-Minute >=40|   0.4   0.5   0.6   0.8   0.5   0.9   0.1   0.0   0.1   0.1   0.0   0.0 |    4.0
                    |                                                                         |
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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.