STATION:  SHERIDAN COUNTY AIRPORT (KSHR), WY

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        |  36.2  39.2  48.0  57.0  66.5  76.2  89.3  86.8  74.6  60.0  47.5  37.1 |   59.9
Avg Min Temp        |  11.8  15.2  21.8  29.8  38.4  46.3  54.7  52.0  42.3  31.5  20.4  12.3 |   31.4
Avg Temperature     |  24.0  27.2  34.9  43.4  52.5  61.2  72.0  69.4  58.5  45.8  34.0  24.7 |   45.6
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    69    71    80    82    93   104   107   103   101    89    81    66 |    107
                    |                                                                         |
    Date of Ext-Day |    08    04    31    27    13    29    14    03    04    19    12    17 |
               -Year|  2002  2005  2004  2004  2001  2002  2002  2001  1998  2003  1999  1998 |
                    |                                                                         |
    Extreme Min Temp|   -35   -21   -14     0    11    31    38    32    24     2    -7   -29 |    -35
                    |                                                                         |
    Date of Ext-Day |    12    17    01    08    20    06    12    17    27    31    11    26 |
               -Year|  1997  2006  2002  1997  1999  1998  2008  2002  1996  2006  2000  1996 |
                    |                                                                         |
Heating Degree Days |  1271  1068   932   649   392   154    12    29   229   596   931  1250 |   7513
Cooling Degree Days |     0     0     0     0     4    41   228   165    33     0     0     0 |    471
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.2   3.2  15.7  12.8   3.0   0.0   0.0   0.0 |   34.9
    Max Temp >= 75  |   0.0   0.0   0.6   2.7   8.2  17.1  29.6  28.1  15.9   4.8   0.5   0.0 |  107.4
    Max Temp <= 32  |  10.8   7.9   4.1   1.2   0.0   0.0   0.0   0.0   0.1   1.1   5.1  10.2 |   40.3
                    |                                                                         |
    Min Temp <= 32  |  30.2  27.7  27.9  18.1   6.7   0.2   0.0   0.1   2.5  16.0  27.0  30.5 |  186.9
    Min Temp <= 20  |  22.8  18.2  10.8   3.1   0.3   0.0   0.0   0.0   0.0   2.5  13.5  22.4 |   93.7
    Min Temp  <= 0  |   5.6   3.2   1.6   0.1   0.0   0.0   0.0   0.0   0.0   0.0   1.6   4.8 |   16.8
                    |                                                                         |
Avg Dew Point Temp  |  14.3  17.1  22.4  29.5  38.9  46.9  49.3  46.7  40.0  32.3  21.6  15.4 |   31.2
Avg Wet Bulb Temp   |  20.6  23.6  29.8  37.3  45.9  53.4  58.8  56.3  48.6  39.2  29.2  21.9 |   38.7
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.14 30.11 30.08 30.07 29.99 29.95 29.93 29.95 30.00 30.08 30.12 30.13 |  30.05
(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   0.1   0.2   1.8   3.7   8.2   8.5   6.4   2.2   0.5   0.1   0.1 |   31.9
    Heavy Fog       |   1.8   3.1   3.1   1.7   0.2   0.0   0.0   0.2   0.1   1.3   1.6   2.1 |   15.1
    Fog             |  10.9  11.4  11.1   9.7   6.8   5.0   2.8   2.5   4.6   6.9   5.4   9.4 |   86.4
    Hail            |   0.0   0.0   0.1   0.2   0.3   0.5   0.2   0.0   0.0   0.0   0.0   0.0 |    1.4
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.51  0.55  0.78  1.61  2.39  1.99  1.06  0.76  1.63  1.48  0.48  0.49 |  13.73
                    |                                                                         |
Maximum Daily       |  1.31  1.05  0.70  1.17  2.45  1.70  1.40  0.60  2.02  1.14  0.57  0.40 |   2.45
                    |                                                                         |
    Date of Ext-Day |    11    17    17    30    07    19    07    21    13    04    20    17 |
               -Year|  2000  2005  2003  2003  2005  2008  2007  2002  1998  2005  2003  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   5.9   6.9   9.2  10.4  11.3  10.5   6.3   6.6   7.3   9.4   5.8   6.5 |   96.2
    >= 0.10         |   1.2   1.3   2.8   4.8   5.3   5.2   2.4   2.2   3.9   4.6   1.5   1.9 |   37.0
    >= 0.25         |   0.3   0.4   0.6   2.1   2.3   2.7   1.4   1.1   2.0   2.0   0.5   0.2 |   15.6
    >= 0.50         |   0.2   0.2   0.1   0.8   0.9   1.1   0.6   0.2   1.1   0.7   0.2   0.0 |    6.0
    >= 1.00         |   0.1   0.1   0.0   0.1   0.5   0.2   0.2   0.0   0.3   0.1   0.0   0.0 |    1.5
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   6.4   7.1   7.7   8.6   8.4   7.1   6.2   5.9   6.1   6.3   6.4   6.7 |    6.9
Daily Avg Max 2-Min |  19.8  20.2  21.6  23.7  23.1  22.1  22.0  20.7  18.6  19.2  19.0  20.1 |   20.8
Daily Avg Peak Gust |  23.2  23.5  25.5  28.6  27.9  26.9  25.4  25.6  22.9  23.2  22.9  23.7 |   24.9
                    |                                                                         |
Maximum Daily Avg   |  23.3  31.1  26.3  29.8  29.7  20.4  21.9  15.2  22.6  23.0  25.7  31.2 |   31.2
                    |                                                                         |
Maximum 2-Minute Avg|    51    62    58    61    60    47    52    58    47    47    55    48 |     62
                    |                                                                         |
Date of Max 2min-Day|    13    16    06    30    01    24    28    16    02    27    22    15 |
               -Year|  2002  2007  2004  2001  2001  2002  2001  2002  2004  2003  1998  2000 |
                    |                                                                         |
Maximum Peak Gust   |    74    78    67    76    76    54    66    67    55    58    63    62 |     78
                    |                                                                         |
Date of Max Gust-Day|    10    16    06    30    01    24    01    16    02    27    18    13 |
               -Year|  2007  2007  2004  2001  2001  2002  2008  2002  2004  2003  2005  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   9.1   8.4  10.4  13.7  12.0  11.2  10.5  10.0   7.6   7.8   7.8   8.8 |  117.3
   Peak Gust >=40   |   3.0   3.2   4.2   4.6   4.8   2.9   3.5   2.9   2.3   2.7   3.2   4.1 |   41.3
   Peak Gust >=50   |   0.9   0.6   0.7   0.5   0.9   0.8   1.2   0.5   0.2   0.4   0.9   1.6 |    9.2
                    |                                                                         |
   Max 2-Minute >=30|   5.4   5.6   7.0   8.2   7.6   4.7   5.4   5.0   3.7   4.6   5.3   0.0 |   62.4
   Max 2-Minute >=40|   1.1   1.3   1.0   1.3   1.3   1.0   1.2   0.7   0.3   0.6   0.9   0.0 |   10.8
                    |                                                                         |
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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.