STATION:  ALAMOSA-SAN LUIS VALLEY REGIONAL AIRPORT (KALS), C

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        |  36.1  40.1  51.8  59.9  70.8  79.9  83.4  80.2  73.9  62.2  48.7  36.3 |   60.3
Avg Min Temp        |   0.2   6.3  17.0  24.3  33.0  39.7  47.4  46.1  36.7  24.8  12.5   1.3 |   24.1
Avg Temperature     |  18.1  23.2  34.4  42.1  51.9  59.8  65.4  63.1  55.3  43.5  30.6  18.8 |   42.2
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    60    64    72    77    90    92    93    91    86    79    70    58 |     93
                    |                                                                         |
    Date of Ext-Day |    16    28    21    22    31    29    13    17    05    02    08    03 |
               -Year|  2000  2006  1997  2006  2002  1998  2003  2002  2000  2000  2005  1998 |
                    |                                                                         |
    Extreme Min Temp|   -32   -26   -14     3    13    24    30    30    15    -7   -21   -33 |    -33
                    |                                                                         |
    Date of Ext-Day |    17    07    02    17    02    09    02    25    29    22    30    29 |
               -Year|  2008  2004  2002  1999  2008  2008  1997  2002  1999  1996  2006  2007 |
                    |                                                                         |
Heating Degree Days |  1453  1181   949   688   407   161    31    74   292   665  1032  1431 |   8365
Cooling Degree Days |     0     0     0     0     0     4    43    17     0     0     0     0 |     64
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.1   0.4   3.3   0.2   0.0   0.0   0.0   0.0 |    3.9
    Max Temp >= 75  |   0.0   0.0   0.0   0.8  11.6  24.1  29.4  27.6  16.7   2.2   0.0   0.0 |  112.4
    Max Temp <= 32  |  12.1   6.1   1.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   2.3  11.2 |   32.9
                    |                                                                         |
    Min Temp <= 32  |  30.9  28.2  30.5  27.3  14.1   2.8   0.1   0.2   8.5  26.0  29.8  30.9 |  229.4
    Min Temp <= 20  |  29.7  25.7  19.9   7.8   1.1   0.0   0.0   0.0   0.3   9.3  24.9  29.8 |  148.3
    Min Temp  <= 0  |  15.6   8.2   1.2   0.0   0.0   0.0   0.0   0.0   0.0   0.1   2.9  14.7 |   42.6
                    |                                                                         |
Avg Dew Point Temp  |   7.3  10.8  15.8  18.3  25.5  32.0  43.8  43.9  34.9  24.4  14.4   6.8 |   23.1
Avg Wet Bulb Temp   |  14.4  19.1  27.5  32.9  40.5  46.1  52.7  51.4  44.9  35.0  24.1  14.4 |   33.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.25 30.17 30.07 29.98 29.95 29.94 30.03 30.06 30.04 30.09 30.20 30.24 |  30.09
(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   0.2   0.7   3.2   7.7  10.9  17.5  17.8   8.6   2.8   0.3   0.1 |   69.7
    Heavy Fog       |   5.7   3.4   3.2   1.9   1.2   0.7   1.3   1.9   1.1   1.8   1.5   3.1 |   26.9
    Fog             |  11.3   8.8   7.0   5.3   3.0   2.3   4.3   5.9   4.3   5.2   4.8   6.4 |   68.6
    Hail            |   0.0   0.0   0.0   0.0   0.1   0.0   0.1   0.0   0.0   0.0   0.0   0.0 |    0.2
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.28  0.26  0.44  0.58  0.37  0.32  1.15  1.31  0.83  0.75  0.27  0.25 |   6.81
                    |                                                                         |
Maximum Daily       |  0.38  0.24  0.88  0.79  0.51  0.35  1.49  0.78  1.17  0.85  0.43  0.34 |   1.49
                    |                                                                         |
    Date of Ext-Day |    27    28    24    30    04    30    19    21    09    08    10    01 |
               -Year|  2005  2001  2007  1999  2001  2004  2007  2001  2003  2006  2008  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   3.9   4.2   4.2   5.1   4.8   4.6   8.8  11.6   7.2   5.5   3.2   3.5 |   66.5
    >= 0.10         |   1.1   1.0   1.3   1.8   1.4   1.3   3.1   3.6   2.6   2.4   0.8   0.8 |   21.2
    >= 0.25         |   0.1   0.0   0.4   0.7   0.3   0.2   1.5   1.7   0.9   0.9   0.3   0.2 |    7.1
    >= 0.50         |   0.0   0.0   0.2   0.1   0.1   0.0   0.5   0.5   0.2   0.3   0.0   0.0 |    1.9
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.1   0.0   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|   5.6   6.6   8.3  10.3   9.5   8.8   6.6   6.2   6.7   6.7   5.8   5.5 |    7.2
Daily Avg Max 2-Min |  15.6  18.2  22.7  27.4  26.1  26.1  23.3  22.4  21.3  19.2  16.2  15.7 |   21.2
Daily Avg Peak Gust |  18.5  22.0  27.7  34.2  32.6  32.6  28.7  27.6  26.4  23.5  19.4  18.8 |   26.0
                    |                                                                         |
Maximum Daily Avg   |  22.9  21.4  22.8  22.4  23.7  27.2  13.1  13.9  19.0  24.7  19.8  29.5 |   29.5
                    |                                                                         |
Maximum 2-Minute Avg|    41    44    49    51    47    52    45    39    54    45    45    43 |     54
                    |                                                                         |
Date of Max 2min-Day|    26    15    31    09    11    06    17    06    08    31    11    20 |
               -Year|  1999  2006  1999  1999  2004  2007  2006  2007  2000  1997  2005  1998 |
                    |                                                                         |
Maximum Peak Gust   |    54    62    60    75    56    67    63    56    67    54    52    55 |     75
                    |                                                                         |
Date of Max Gust-Day|    26    24    31    09    14    06    06    18    08    31    11    09 |
               -Year|  1999  1998  1999  1999  2002  2007  2003  2002  2000  1997  2005  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   5.6   8.0  13.6  20.2  20.3  19.1  13.5  12.0  10.9   8.5   5.7   5.9 |  143.2
   Peak Gust >=40   |   1.5   1.6   3.4   8.2   6.3   6.1   2.7   1.7   2.1   1.9   1.0   1.8 |   38.3
   Peak Gust >=50   |   0.1   0.2   0.7   1.5   1.0   1.1   0.5   0.2   0.2   0.4   0.1   0.2 |    6.1
                    |                                                                         |
   Max 2-Minute >=30|   2.1   3.3   6.5  12.1   9.8   8.5   4.9   4.2   3.3   4.0   2.4   0.0 |   61.2
   Max 2-Minute >=40|   0.2   0.4   0.9   1.8   0.9   0.8   0.4   0.0   0.3   0.4   0.2   0.0 |    6.3
                    |                                                                         |
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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.