STATION:  WINDOW ROCK AIRPORT (KRQE), AZ

CLIMATOLOGICAL SUMMARY.  Period of Record: Aug 1998 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        |  44.5  47.8  55.2  63.2  73.8  83.8  86.6  82.4  76.6  65.5  55.2  44.1 |   64.9
Avg Min Temp        |  14.4  17.6  21.9  28.6  36.1  43.7  52.7  51.6  41.7  31.0  20.1  12.7 |   31.0
Avg Temperature     |  29.4  32.7  38.6  45.9  55.0  63.7  69.6  67.0  59.2  48.2  37.7  28.4 |   48.0
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    63    65    76    81    92    93    98    93    88    83    85    66 |     98
                    |                                                                         |
    Date of Ext-Day |    15    23    17    27    31    30    09    02    14    01    29    01 |
               -Year|  2000  2002  2007  2000  2002  2002  2003  2000  2000  2003  2000  2003 |
                    |                                                                         |
    Extreme Min Temp|   -13   -11    -8    10    13    27    38    35    22    13    -5   -12 |    -13
                    |                                                                         |
    Date of Ext-Day |    17    01    03    16    02    12    10    25    29    30    30    26 |
               -Year|  2008  2001  2002  1999  2008  2008  2003  2002  1999  1999  2004  2002 |
                    |                                                                         |
Heating Degree Days |  1103   913   818   573   313    78     2    15   180   520   820  1134 |   6469
Cooling Degree Days |     0     0     0     0     3    40   146    77     5     0     0     0 |    271
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.3   3.9   9.0   2.0   0.0   0.0   0.0   0.0 |   15.2
    Max Temp >= 75  |   0.0   0.0   0.2   1.4  16.4  28.1  30.2  29.5  21.5   3.9   0.5   0.0 |  131.7
    Max Temp <= 32  |   3.2   1.0   0.3   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.7   2.8 |    8.1
                    |                                                                         |
    Min Temp <= 32  |  30.1  27.3  29.1  21.5   9.9   1.5   0.0   0.0   3.0  19.1  28.0  30.6 |  200.2
    Min Temp <= 20  |  21.7  16.7  13.0   3.5   0.4   0.0   0.0   0.0   0.0   2.5  16.4  24.4 |   98.6
    Min Temp  <= 0  |   3.5   0.7   0.6   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3   2.7 |    7.8
                    |                                                                         |
Avg Dew Point Temp  |  16.6  16.6  18.1  18.9  23.4  26.8  43.2  46.7  36.9  27.1  18.0  15.1 |   25.6
Avg Wet Bulb Temp   |  24.3  26.5  30.8  35.4  41.7  47.2  55.2  55.3  47.6  38.5  29.5  23.2 |   37.9
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.13 30.06 29.99 29.93 29.87 29.85 29.89 29.93 29.95 30.01 30.10 30.14 |  29.99
(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   |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Heavy Fog       |   2.4   1.9   1.9   1.1   0.2   0.1   0.0   0.4   0.4   0.5   0.6   2.3 |   11.7
    Fog             |   8.1   6.4   7.6   4.7   1.5   0.9   3.0   4.7   4.0   5.9   3.7   6.8 |   57.3
    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     |  0.73  0.69  0.67  0.54  0.45  0.23  1.76  2.21  1.39  1.12  0.58  0.60 |  10.98
                    |                                                                         |
Maximum Daily       |  0.62  0.77  0.49  0.59  0.69  0.25  1.09  2.49  1.45  0.95  0.87  0.58 |   2.49
                    |                                                                         |
    Date of Ext-Day |    27    11    11    24    20    29    31    11    29    09    30    29 |
               -Year|  2008  2005  2006  2005  2007  2008  2006  2005  2004  2005  2007  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   6.4   6.7   6.2   5.3   4.3   3.1   9.3  12.9   7.5   7.4   5.4   7.6 |   82.1
    >= 0.10         |   2.4   2.6   2.2   1.9   1.7   0.8   4.4   5.6   3.2   3.3   1.4   1.8 |   31.3
    >= 0.25         |   0.8   0.4   0.9   0.5   0.6   0.1   2.4   2.9   1.9   1.5   0.6   0.5 |   13.1
    >= 0.50         |   0.1   0.1   0.0   0.1   0.1   0.0   1.1   1.0   0.8   0.5   0.2   0.3 |    4.2
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.3   0.3   0.0   0.0   0.0 |    0.8
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   4.5   5.4   6.4   8.1   7.3   6.9   5.1   4.4   4.7   4.8   4.4   4.4 |    5.5
Daily Avg Max 2-Min |  16.2  18.6  20.6  24.4  23.3  22.9  21.0  19.1  19.0  18.0  16.5  16.5 |   19.7
Daily Avg Peak Gust |  20.5  24.2  26.8  32.1  31.0  31.3  27.6  25.1  25.0  23.5  20.9  20.9 |   25.8
                    |                                                                         |
Maximum Daily Avg   |  21.3  21.9  20.8  20.8  21.0  23.5   9.2  10.3  17.9  21.2  24.4  21.7 |   24.4
                    |                                                                         |
Maximum 2-Minute Avg|    44    44    39    46    43    46    36    37    38    43    44    44 |     46
                    |                                                                         |
Date of Max 2min-Day|    12    02    23    09    11    06    05    16    20    11    09    14 |
               -Year|  2007  2003  2002  1999  2004  2007  2003  2002  2006  2008  2002  2008 |
                    |                                                                         |
Maximum Peak Gust   |    60    56    56    59    61    70    49    53    52    59    55    58 |     70
                    |                                                                         |
Date of Max Gust-Day|    12    15    10    09    21    06    15    16    20    11    09    14 |
               -Year|  2007  2006  2006  1999  2008  2007  2005  2002  2006  2008  2002  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   4.6   7.3  10.1  17.3  16.9  16.1  10.9   7.0   8.2   6.6   3.6   5.5 |  113.9
   Peak Gust >=40   |   0.9   2.1   3.0   6.6   4.3   4.1   1.7   0.8   1.5   1.9   0.7   1.8 |   29.5
   Peak Gust >=50   |   0.3   0.4   0.5   1.0   0.7   0.8   0.0   0.2   0.2   0.1   0.2   0.3 |    4.7
                    |                                                                         |
   Max 2-Minute >=30|   1.5   1.8   3.9   7.7   5.4   3.8   1.8   1.0   1.6   2.0   1.1   0.0 |   31.5
   Max 2-Minute >=40|   0.1   0.3   0.0   0.9   0.5   0.3   0.0   0.0   0.0   0.1   0.1   0.0 |    2.3
                    |                                                                         |
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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.