STATION:  ROSWELL INTERNATIONAL AIR CENTER AP (KROW), NM

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        |  56.7  61.6  69.0  77.5  87.1  94.6  94.8  92.3  87.2  76.1  64.8  55.9 |   76.5
Avg Min Temp        |  26.8  30.9  37.5  44.7  54.9  63.2  67.7  66.1  59.4  47.3  34.8  25.8 |   46.6
Avg Temperature     |  41.8  46.3  53.3  61.1  71.0  78.9  81.3  79.2  73.3  61.7  49.8  40.9 |   61.5
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    81    87    91    96   107   110   111   107   103    99    88    83 |    111
                    |                                                                         |
    Date of Ext-Day |    03    28    21    29    24    28    29    15    06    02    19    02 |
               -Year|  1997  2006  1997  2002  2000  1998  1998  2002  2000  2000  1996  2008 |
                    |                                                                         |
    Extreme Min Temp|    11    11     9    27    39    50    56    57    40    28    16    -6 |     -6
                    |                                                                         |
    Date of Ext-Day |    09    14    03    18    05    17    28    30    29    27    25    27 |
               -Year|  1997  2004  2002  2008  2001  1997  2005  1998  1999  1997  1999  1997 |
                    |                                                                         |
Heating Degree Days |   721   529   367   159    25     0     0     0     8   153   457   748 |   3166
Cooling Degree Days |     0     0     3    41   210   416   505   441   258    50     1     0 |   1926
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.2   2.4  13.7  22.7  26.0  22.3  12.7   2.6   0.0   0.0 |  102.7
    Max Temp >= 75  |   1.9   3.9  11.0  19.9  28.1  29.7  30.8  30.8  28.0  18.6   7.0   1.2 |  210.8
    Max Temp <= 32  |   0.7   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.9 |    1.9
                    |                                                                         |
    Min Temp <= 32  |  24.3  16.2   7.2   1.8   0.0   0.0   0.0   0.0   0.0   0.9  11.6  25.3 |   87.2
    Min Temp <= 20  |   5.5   1.7   0.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.7   6.6 |   15.0
    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   0.2 |    0.2
                    |                                                                         |
Avg Dew Point Temp  |  22.2  22.6  27.2  29.4  39.5  48.4  56.4  57.5  51.8  41.0  29.4  22.1 |   37.3
Avg Wet Bulb Temp   |  33.4  36.3  41.7  46.4  54.5  61.3  65.1  65.2  60.3  50.3  40.2  32.9 |   49.0
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.08 30.04 29.99 29.96 29.88 29.87 29.86 29.88 29.91 29.98 30.06 30.08 |  29.97
(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   0.1   0.6   0.5   0.9   1.0   1.9   2.4   0.9   0.8   0.0   0.0 |    9.0
    Heavy Fog       |   2.2   1.5   0.8   0.2   0.2   0.1   0.0   0.1   0.4   1.9   1.5   1.6 |   10.6
    Fog             |   6.2   5.8   6.2   3.5   4.4   2.8   2.2   3.6   4.6   7.9   5.7   5.3 |   58.3
    Hail            |   0.0   0.0   0.1   0.1   0.0   0.2   0.0   0.0   0.0   0.1   0.0   0.1 |    0.5
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.32  0.39  0.90  0.71  1.05  1.36  1.72  1.74  1.39  1.36  0.62  0.45 |  12.02
                    |                                                                         |
Maximum Daily       |  0.50  0.61  2.08  1.35  1.45  1.95  2.54  1.95  2.45  1.79  0.91  0.70 |   2.54
                    |                                                                         |
    Date of Ext-Day |    20    05    07    24    01    09    10    16    03    30    07    22 |
               -Year|  2007  2005  2001  1997  1999  2006  1999  2008  2006  1998  2000  1997 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   2.7   3.6   4.3   2.7   3.9   6.4   7.0   7.1   5.8   6.5   3.8   3.5 |   57.2
    >= 0.10         |   0.9   1.5   2.0   1.4   1.6   2.3   2.9   3.7   2.6   2.8   1.5   1.1 |   24.4
    >= 0.25         |   0.7   0.7   1.1   0.8   1.2   1.7   1.5   2.2   1.6   1.5   0.8   0.6 |   14.3
    >= 0.50         |   0.1   0.1   0.4   0.4   0.8   1.1   1.1   1.2   0.9   0.8   0.5   0.2 |    7.6
    >= 1.00         |   0.0   0.0   0.2   0.2   0.4   0.3   0.3   0.2   0.2   0.3   0.0   0.0 |    2.2
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   7.3   8.8   9.6  10.6   9.9   9.9   8.3   7.5   7.9   7.9   7.2   7.4 |    8.5
Daily Avg Max 2-Min |  18.9  21.5  23.3  25.6  24.8  25.4  22.0  20.6  20.0  19.2  18.1  19.5 |   21.6
Daily Avg Peak Gust |  22.6  25.9  28.2  31.5  30.8  31.4  27.5  25.6  24.8  23.5  21.8  23.4 |   26.4
                    |                                                                         |
Maximum Daily Avg   |  22.1  20.7  25.6  23.7  19.3  19.1  16.9  14.5  17.3  19.9  23.7  21.6 |   25.6
                    |                                                                         |
Maximum 2-Minute Avg|    43    47    48    56    78    51    49    41    43    49    48    51 |     78
                    |                                                                         |
Date of Max 2min-Day|    21    19    08    15    29    23    30    09    18    21    27    08 |
               -Year|  1999  2004  2005  2003  2004  2007  1997  2003  2002  2007  2006  2008 |
                    |                                                                         |
Maximum Peak Gust   |    54    54    56    64    78    62    59    55    53    59    62    62 |     78
                    |                                                                         |
Date of Max Gust-Day|    21    08    14    15    29    20    03    09    29    21    27    08 |
               -Year|  1999  2001  2008  2003  2004  2002  1997  2003  2007  2007  2006  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   6.5   9.4  12.0  16.4  15.0  16.0  10.2   7.9   7.1   6.0   5.5   7.1 |  119.2
   Peak Gust >=40   |   1.9   2.9   4.1   6.7   5.6   5.8   1.9   0.9   1.1   1.2   1.0   2.8 |   36.0
   Peak Gust >=50   |   0.3   0.2   1.0   1.3   0.8   0.9   0.7   0.1   0.2   0.2   0.3   0.5 |    6.5
                    |                                                                         |
   Max 2-Minute >=30|   3.2   4.2   6.6   9.4   8.8   7.9   3.4   2.3   2.3   2.2   2.5   0.0 |   52.7
   Max 2-Minute >=40|   0.3   0.3   1.8   1.4   1.0   1.1   0.7   0.1   0.1   0.4   0.5   0.0 |    7.8
                    |                                                                         |
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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.