STATION:  BIG PINEY-MARBLETON ARPT (KBPI), WY

CLIMATOLOGICAL SUMMARY.  Period of Record: Mar 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        |  24.8  27.3  39.2  52.1  62.6  72.1  83.8  80.2  67.8  55.5  39.1  27.7 |   52.7
Avg Min Temp        |  -2.7  -0.3  13.5  22.5  30.0  36.9  44.8  42.1  33.0  23.7  10.5  -0.1 |   21.2
Avg Temperature     |  11.0  13.5  26.4  37.3  46.3  54.5  64.3  61.2  50.4  39.6  24.8  13.8 |   36.9
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    48    50    66    77    86    91    96   103    85    76    64    54 |    103
                    |                                                                         |
    Date of Ext-Day |    31    01    31    28    28    26    14    09    03    01    07    01 |
               -Year|  2003  2003  2004  2000  2003  2002  2002  1998  1998  2001  2006  2008 |
                    |                                                                         |
    Extreme Min Temp|   -31   -27   -19     0    11    22    33    24    15     3   -22   -35 |    -35
                    |                                                                         |
    Date of Ext-Day |    30    20    08    03    09    01    06    31    29    31    29    08 |
               -Year|  2002  2006  1998  1999  2002  2000  2000  2005  1999  2006  2004  2005 |
                    |                                                                         |
Heating Degree Days |  1673  1455  1197   831   579   315    63   139   438   787  1207  1588 |  10271
Cooling Degree Days |     0     0     0     0     0     2    41    21     0     0     0     0 |     64
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.0   0.4   4.4   1.7   0.0   0.0   0.0   0.0 |    6.5
    Max Temp >= 75  |   0.0   0.0   0.0   0.3   4.7  14.5  29.6  26.3   8.1   0.5   0.0   0.0 |   83.9
    Max Temp <= 32  |  24.3  20.0   7.8   0.7   0.0   0.0   0.0   0.0   0.3   0.6   8.3  21.1 |   83.0
                    |                                                                         |
    Min Temp <= 32  |  31.0  28.2  31.0  28.4  19.5   7.2   0.0   1.2  14.5  28.0  29.6  31.0 |  249.7
    Min Temp <= 20  |  30.6  27.7  22.1  10.1   2.9   0.0   0.0   0.0   0.8   9.8  25.4  30.4 |  159.7
    Min Temp  <= 0  |  19.2  14.7   4.6   0.1   0.0   0.0   0.0   0.0   0.0   0.0   5.1  16.1 |   59.8
                    |                                                                         |
Avg Dew Point Temp  |   5.9   8.1  17.5  22.1  28.5  33.7  38.8  37.5  31.8  23.9  14.8   7.4 |   22.5
Avg Wet Bulb Temp   |   9.9  12.2  23.1  31.0  38.5  44.5  50.7  48.7  41.3  32.3  20.9  11.9 |   30.4
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.26 30.20 30.08 30.01 29.95 29.94 29.97 29.98 30.01 30.07 30.19 30.24 |  30.08
(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   0.2   0.7   2.8   4.6   7.0   5.5   3.2   0.4   0.2   0.0 |   24.5
    Heavy Fog       |   5.0   4.6   3.4   2.1   1.2   0.1   0.0   0.0   0.9   1.4   4.0   4.0 |   26.7
    Fog             |  12.7  12.9   9.9   7.8   4.9   3.3   1.7   3.0   5.0   5.3   8.5  10.0 |   85.0
    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     |  0.24  0.42  0.40  0.74  1.00  0.86  0.47  0.82  0.88  0.68  0.26  0.29 |   7.05
                    |                                                                         |
Maximum Daily       |  0.32  0.46  0.50  0.84  0.88  0.96  0.46  0.95  0.63  0.81  0.25  0.40 |   0.96
                    |                                                                         |
    Date of Ext-Day |    11    02    23    29    01    17    14    09    15    03    23    29 |
               -Year|  2005  2003  2005  1999  2002  2004  1999  2001  2006  1998  2002  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   4.4   6.4   6.7   6.3   7.7   6.5   6.3   7.1   6.9   5.6   4.8   4.7 |   73.2
    >= 0.10         |   0.7   1.4   1.0   2.7   2.9   2.7   1.8   2.6   3.5   2.2   0.7   0.6 |   23.1
    >= 0.25         |   0.3   0.2   0.3   0.8   1.3   1.0   0.4   0.7   1.1   0.8   0.1   0.4 |    7.3
    >= 0.50         |   0.0   0.0   0.1   0.2   0.3   0.4   0.0   0.3   0.1   0.3   0.0   0.0 |    1.6
    >= 1.00         |   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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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   5.0   5.1   6.5   8.1   8.4   8.3   7.4   6.9   6.5   6.3   5.5   5.0 |    6.6
Daily Avg Max 2-Min |  15.2  15.4  18.0  22.5  24.6  24.7  23.0  22.9  20.6  18.8  16.4  15.1 |   19.8
Daily Avg Peak Gust |  17.4  17.7  21.8  28.0  30.5  31.0  29.0  28.5  25.5  22.9  19.3  17.7 |   24.1
                    |                                                                         |
Maximum Daily Avg   |  19.2  17.3  19.6  19.6  22.0  15.0  14.9  13.2  16.2  19.1  20.6  17.1 |   22.0
                    |                                                                         |
Maximum 2-Minute Avg|    41    43    52    46    52    47    48    54    46    47    47    46 |     54
                    |                                                                         |
Date of Max 2min-Day|    01    14    27    23    20    21    07    30    25    29    24    15 |
               -Year|  2004  2000  2007  2002  2008  1999  2004  1999  1999  2003  1998  2000 |
                    |                                                                         |
Maximum Peak Gust   |    47    48    60    67    68    67    60    67    54    56    56    54 |     68
                    |                                                                         |
Date of Max Gust-Day|    01    14    27    24    20    07    07    30    25    29    24    15 |
               -Year|  2004  2000  2007  1998  2008  2005  2004  1999  1999  2003  1998  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   3.3   3.7   5.4  11.9  17.2  16.1  14.1  12.8   9.5   6.9   4.5   3.1 |  108.6
   Peak Gust >=40   |   0.6   0.6   0.8   3.7   3.8   4.2   2.9   3.3   1.8   1.1   1.4   0.5 |   24.7
   Peak Gust >=50   |   0.0   0.0   0.2   0.5   0.9   0.6   0.5   0.3   0.4   0.2   0.2   0.1 |    3.8
                    |                                                                         |
   Max 2-Minute >=30|   1.7   1.7   2.1   5.1   6.5   6.7   4.1   5.6   3.5   2.4   2.3   0.0 |   41.7
   Max 2-Minute >=40|   0.1   0.1   0.2   0.5   0.7   0.8   0.4   0.3   0.5   0.2   0.3   0.0 |    4.1
                    |                                                                         |
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies.  Average days
with Thunderstorms may be low due to 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.