STATION:  IMPERIAL COUNTY AIRPORT (KIPL), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Aug 2000 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        |  69.4  72.4  80.5  85.3  95.9 104.8 108.1 106.9 102.4  89.9  78.0  68.8 |   88.5
Avg Min Temp        |  40.5  43.7  50.0  54.3  62.4  70.3  79.1  78.6  71.4  59.8  48.5  40.3 |   58.3
Avg Temperature     |  55.0  58.1  65.2  69.8  79.1  87.6  93.6  92.8  86.9  74.8  63.3  54.5 |   73.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    88    87   101   106   112   116   121   117   116   104   101    84 |    121
                    |                                                                         |
    Date of Ext-Day |    31    01    17    28    19    19    17    29    01    01    07    01 |
               -Year|  2003  2003  2007  2007  2008  2008  2005  2005  2007  2003  2008  2008 |
                    |                                                                         |
    Extreme Min Temp|    21    27    30    41    47    57    65    64    56    46    31    28 |     21
                    |                                                                         |
    Date of Ext-Day |    14    13    03    01    10    10    24    23    22    29    30    29 |
               -Year|  2007  2004  2002  2005  2003  2004  2001  2002  2004  2004  2006  2003 |
                    |                                                                         |
Heating Degree Days |   311   198    82    17     0     0     0     0     0     6   105   325 |   1045
Cooling Degree Days |     1     3    89   160   438   678   886   861   657   311    54     0 |   4139
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   5.6   8.6  24.9  29.9  31.0  30.9  28.3  18.4   1.4   0.0 |  179.1
    Max Temp >= 75  |   6.4  10.5  22.0  27.5  30.9  30.0  31.0  31.0  29.9  29.5  19.7   5.3 |  273.7
    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  |   1.8   0.5   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3   2.1 |    4.8
    Min Temp <= 20  |   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  <= 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  |  32.6  34.1  36.8  38.9  43.5  46.3  58.7  61.1  52.0  43.9  36.3  31.4 |   43.0
Avg Wet Bulb Temp   |  44.7  46.9  51.2  54.0  59.5  63.8  71.0  72.1  65.6  57.7  49.9  43.8 |   56.7
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.08 30.02 29.94 29.88 29.78 29.74 29.76 29.76 29.77 29.86 29.99 30.08 |  29.89
(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   0.4   0.2   0.2   0.6   0.6   1.5   1.9   0.6   0.6   0.2   0.0 |    7.3
    Heavy Fog       |   0.6   0.6   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.2   0.3 |    2.0
    Fog             |   3.4   3.2   1.9   0.2   0.0   0.1   0.0   0.7   0.0   1.1   1.3   1.6 |   13.5
    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     |  0.23  0.51  0.21  0.06  0.00  0.00  0.01  0.18  0.06  0.27  0.25  0.19 |   1.97
                    |                                                                         |
Maximum Daily       |  0.37  1.17  0.37  0.42  0.03  0.00  0.08  0.99  0.44  1.07  0.84  0.98 |   1.17
                    |                                                                         |
    Date of Ext-Day |    26    22    06    02    22          23    27    21    16    21    17 |
               -Year|  2005  2004  2001  2004  2006        2005  2003  2007  2005  2004  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   2.2   2.4   1.5   0.6   0.1   0.0   0.2   0.9   0.2   1.2   1.3   0.9 |   11.7
    >= 0.10         |   0.9   1.2   0.9   0.1   0.0   0.0   0.0   0.3   0.1   0.8   0.4   0.2 |    5.0
    >= 0.25         |   0.4   0.6   0.4   0.1   0.0   0.0   0.0   0.2   0.1   0.4   0.3   0.2 |    2.8
    >= 0.50         |   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.1   0.2   0.2 |    0.8
    >= 1.00         |   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0 |    0.2
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   5.5   6.7   8.0   9.8   8.5   8.1   8.0   7.1   6.6   6.3   5.4   5.1 |    7.1
Daily Avg Max 2-Min |  14.1  16.7  18.6  22.0  19.6  19.2  18.6  18.2  17.1  15.5  13.6  13.7 |   17.2
Daily Avg Peak Gust |  16.8  20.1  22.8  26.7  23.8  23.2  22.2  21.9  20.7  19.1  16.6  16.4 |   20.9
                    |                                                                         |
Maximum Daily Avg   |  18.7  27.5  25.3  24.1  23.2  19.8  17.1  15.2  26.5  20.7  21.0  15.9 |   27.5
                    |                                                                         |
Maximum 2-Minute Avg|    45    46    43    45    43    44    36    45    41    43    38    47 |     47
                    |                                                                         |
Date of Max 2min-Day|    11    07    10    14    14    05    20    13    19    05    22    25 |
               -Year|  2005  2001  2006  2006  2003  2007  2005  2004  2004  2007  2001  2003 |
                    |                                                                         |
Maximum Peak Gust   |    54    54    55    53    56    56    43    51    48    53    45    56 |     56
                    |                                                                         |
Date of Max Gust-Day|    11    07    27    05    18    05    30    13    19    05    22    01 |
               -Year|  2005  2001  2007  2006  2001  2007  2005  2004  2004  2007  2001  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   3.2   5.4   7.9  11.2   8.0   6.6   3.0   3.9   5.5   5.4   3.3   3.4 |   67.0
   Peak Gust >=40   |   0.8   1.6   2.4   4.1   2.2   0.6   0.4   1.1   1.1   1.1   0.6   1.3 |   17.3
   Peak Gust >=50   |   0.1   0.5   0.1   0.5   0.1   0.1   0.0   0.2   0.0   0.1   0.0   0.2 |    2.1
                    |                                                                         |
   Max 2-Minute >=30|   1.8   3.2   4.1   7.8   3.6   2.9   0.8   1.4   2.3   1.9   1.8   0.0 |   31.6
   Max 2-Minute >=40|   0.2   0.6   0.4   0.8   0.5   0.1   0.0   0.2   0.1   0.1   0.0   0.0 |    3.1
                    |                                                                         |
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies.  Average days
with Thunderstorms may be low due to poor 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.