STATION:  BLYTHE AIRPORT (KBLH), CA

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        |  68.5  71.6  80.4  85.8  96.9 104.9 108.8 107.2 101.4  89.8  77.1  67.0 |   88.3
Avg Min Temp        |  42.9  45.2  51.3  55.8  65.8  72.9  81.7  81.0  73.0  60.7  49.4  41.2 |   60.1
Avg Temperature     |  55.7  58.4  65.8  70.8  81.4  88.9  95.2  94.1  87.2  75.3  63.3  54.1 |   74.2
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    86    87   100   104   114   117   121   118   114   107    93    82 |    121
                    |                                                                         |
    Date of Ext-Day |    31    23    21    27    29    15    17    03    01    01    13    16 |
               -Year|  2003  2002  2004  2000  2000  2000  2005  1998  2007  2003  1999  1998 |
                    |                                                                         |
    Extreme Min Temp|    25    28    31    41    49    55    69    63    56    48    32    26 |     25
                    |                                                                         |
    Date of Ext-Day |    14    01    04    03    01    05    02    29    23    31    14    16 |
               -Year|  2007  2002  2002  1999  1999  1999  1997  2000  2007  2000  2000  2005 |
                    |                                                                         |
Heating Degree Days |   291   190    76    23     0     0     0     0     0     5   101   340 |   1025
Cooling Degree Days |     2     4   101   197   509   717   937   901   667   324    49     1 |   4407
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   5.3  10.8  25.2  29.1  31.0  30.8  28.5  18.0   1.3   0.0 |  179.9
    Max Temp >= 75  |   5.8  10.0  21.6  26.7  31.0  30.0  31.0  31.0  30.0  29.5  19.7   2.8 |  269.1
    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  |   1.0   0.3   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   1.6 |    3.2
    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  |  28.0  28.9  30.9  31.4  35.2  39.3  54.7  57.1  47.4  39.2  30.7  26.6 |   37.4
Avg Wet Bulb Temp   |  43.7  45.8  50.0  52.1  58.1  62.8  70.3  70.8  64.6  56.7  48.3  42.4 |   55.5
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.08 30.01 29.94 29.87 29.78 29.77 29.76 29.76 29.78 29.87 30.00 30.09 |  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   |   0.1   0.5   0.3   0.1   0.2   0.4   2.7   3.9   2.2   1.0   0.4   0.1 |   11.7
    Heavy Fog       |   0.4   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.0   0.0   0.1 |    0.9
    Fog             |   2.4   1.8   1.3   0.2   0.0   0.0   0.1   0.7   0.6   1.0   1.0   0.8 |    9.7
    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     |  0.35  0.73  0.37  0.11  0.02  0.02  0.18  0.34  0.38  0.18  0.20  0.20 |   3.08
                    |                                                                         |
Maximum Daily       |  0.61  1.36  1.52  0.45  0.18  0.20  0.80  1.46  1.39  0.56  1.04  0.65 |   1.52
                    |                                                                         |
    Date of Ext-Day |    03    03    06    12    23    28    14    09    06    17    30    17 |
               -Year|  2005  1998  2001  1999  2008  2006  1999  2006  2006  2005  2007  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   2.8   3.0   1.8   0.9   0.3   0.2   1.5   1.1   2.0   1.1   1.8   1.1 |   17.6
    >= 0.10         |   1.1   1.4   0.9   0.4   0.1   0.1   0.5   0.6   0.8   0.5   0.4   0.5 |    7.2
    >= 0.25         |   0.4   1.2   0.5   0.2   0.0   0.0   0.2   0.5   0.4   0.4   0.3   0.3 |    4.3
    >= 0.50         |   0.2   0.4   0.2   0.0   0.0   0.0   0.1   0.2   0.2   0.1   0.1   0.1 |    1.5
    >= 1.00         |   0.0   0.2   0.1   0.0   0.0   0.0   0.0   0.1   0.1   0.0   0.1   0.0 |    0.5
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   6.5   6.6   7.2   8.9   8.7   9.1   9.6   8.6   6.9   6.2   5.9   5.9 |    7.5
Daily Avg Max 2-Min |  16.8  17.3  18.0  20.8  19.9  20.1  20.9  20.5  17.9  15.9  15.5  15.9 |   18.3
Daily Avg Peak Gust |  20.2  20.9  22.0  25.7  24.5  24.5  25.6  25.1  22.0  19.4  18.5  18.8 |   22.3
                    |                                                                         |
Maximum Daily Avg   |  22.0  19.4  21.3  21.8  18.8  16.3  15.9  16.1  19.6  24.4  19.4  22.4 |   24.4
                    |                                                                         |
Maximum 2-Minute Avg|    44    43    44    43    37    35    40    47    47    36    41    43 |     47
                    |                                                                         |
Date of Max 2min-Day|    05    18    02    14    22    25    17    14    08    21    14    23 |
               -Year|  2003  2004  2008  2006  2006  2006  2003  2005  2006  2007  2005  2004 |
                    |                                                                         |
Maximum Peak Gust   |    60    51    54    53    47    45    64    61    58    47    48    51 |     64
                    |                                                                         |
Date of Max Gust-Day|    05    18    02    12    05    05    20    14    08    21    04    27 |
               -Year|  2008  2004  2008  2007  2008  2007  2006  2005  2006  2007  2001  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   5.5   4.8   6.2  10.1   6.8   4.2   6.5   5.9   5.5   4.3   4.4   4.5 |   68.8
   Peak Gust >=40   |   1.4   0.6   1.4   1.5   1.0   0.4   0.9   1.8   1.0   0.4   1.1   1.2 |   12.8
   Peak Gust >=50   |   0.4   0.1   0.1   0.2   0.0   0.0   0.3   0.8   0.4   0.0   0.0   0.1 |    2.5
                    |                                                                         |
   Max 2-Minute >=30|   2.6   1.6   2.5   3.0   2.3   0.8   1.9   2.9   2.2   1.5   2.4   0.0 |   23.6
   Max 2-Minute >=40|   0.1   0.1   0.1   0.2   0.0   0.0   0.1   0.9   0.4   0.0   0.1   0.0 |    2.2
                    |                                                                         |
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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.