STATION:  BAKER MUNICIPAL AIRPORT (KBHK), MT

CLIMATOLOGICAL SUMMARY.  Period of Record: Feb 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        |  30.4  32.6  42.5  56.4  65.1  74.1  87.9  85.4  73.1  56.9  43.7  31.9 |   56.7
Avg Min Temp        |   8.3  11.2  20.0  30.6  39.6  48.7  57.3  54.3  43.4  31.0  20.2   9.9 |   31.2
Avg Temperature     |  19.4  21.9  31.2  43.5  52.4  61.4  72.6  69.8  58.2  44.0  32.0  20.9 |   43.9
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    61    65    78    93    94   103   108   104   101    89    80    64 |    108
                    |                                                                         |
    Date of Ext-Day |    08    22    26    27    13    29    23    07    04    01    07    01 |
               -Year|  2002  2002  1999  2001  2001  2002  2007  2001  1998  2005  1999  1998 |
                    |                                                                         |
    Extreme Min Temp|   -29   -22   -28     2    15    30    41    36    22     2   -17   -26 |    -29
                    |                                                                         |
    Date of Ext-Day |    22    09    21    03    03    02    16    23    30    31    23    15 |
               -Year|  2003  2001  2002  2002  2005  2000  1999  2008  2003  2002  2003  2008 |
                    |                                                                         |
Heating Degree Days |  1415  1216  1046   645   396   154    12    32   247   652   991  1367 |   8175
Cooling Degree Days |     0     0     0     1     4    47   247   183    44     0     0     0 |    525
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.1   0.1   2.1  13.8  11.3   3.7   0.0   0.0   0.0 |   31.1
    Max Temp >= 75  |   0.0   0.0   0.4   2.1   6.7  15.0  28.7  26.9  14.2   2.9   0.3   0.0 |   97.1
    Max Temp <= 32  |  15.0  12.6   7.0   1.2   0.0   0.0   0.0   0.0   0.0   1.2   7.3  14.0 |   58.3
                    |                                                                         |
    Min Temp <= 32  |  30.5  28.0  28.8  18.1   6.3   0.5   0.0   0.0   2.5  17.3  27.8  30.8 |  190.5
    Min Temp <= 20  |  23.7  19.9  12.9   3.6   0.2   0.0   0.0   0.0   0.0   3.6  13.1  23.8 |  100.8
    Min Temp  <= 0  |   9.1   6.3   2.6   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.8   7.8 |   27.6
                    |                                                                         |
Avg Dew Point Temp  |  13.3  15.8  21.7  29.8  39.1  48.7  52.8  49.8  40.9  31.4  21.3  14.0 |   31.5
Avg Wet Bulb Temp   |  17.9  20.2  27.5  37.5  46.1  54.4  60.9  58.2  49.0  38.1  27.6  18.9 |   38.0
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.12 30.12 30.08 30.05 30.01 29.97 29.93 29.95 30.01 30.07 30.11 30.11 |  30.04
(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   0.1   0.6   2.5   5.0   4.9   4.2   2.0   0.2   0.0   0.0 |   19.5
    Heavy Fog       |   3.5   4.2   3.5   1.8   1.7   1.1   0.4   0.4   0.5   2.1   2.3   3.1 |   24.4
    Fog             |  14.5  14.1  15.1  10.5  10.1   9.5   4.9   5.7   5.8   8.6   8.1  11.1 |  118.1
    Hail            |   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.15  0.28  0.68  1.14  2.54  2.99  1.34  1.17  1.28  1.20  0.49  0.22 |  13.47
                    |                                                                         |
Maximum Daily       |  0.19  0.34  0.82  1.40  2.20  2.50  1.78  1.48  1.56  1.09  2.15  0.46 |   2.50
                    |                                                                         |
    Date of Ext-Day |    13    25    17    17    07    28    26    03    10    04    01    15 |
               -Year|  2002  2000  2003  2006  2005  2005  2001  2004  2003  1998  2000  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   3.4   5.7   7.0   8.5  12.1  13.3   8.1   7.0   7.5   7.7   4.7   4.1 |   89.1
    >= 0.10         |   0.6   0.8   1.7   2.9   6.0   6.3   3.5   2.7   3.4   2.9   1.2   0.5 |   32.5
    >= 0.25         |   0.0   0.2   0.7   1.5   3.0   3.4   1.8   1.0   1.3   1.8   0.3   0.2 |   15.3
    >= 0.50         |   0.0   0.0   0.3   0.5   1.0   1.5   0.6   0.5   0.8   0.5   0.1   0.0 |    5.8
    >= 1.00         |   0.0   0.0   0.0   0.1   0.6   0.8   0.1   0.4   0.1   0.2   0.1   0.0 |    2.3
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|  10.3  10.4  11.9  12.1  12.7  11.4  10.5  10.4   9.8  10.4  10.7  10.6 |   10.9
Daily Avg Max 2-Min |  21.7  21.5  23.8  24.8  25.7  25.0  23.9  23.5  21.9  22.1  22.2  22.2 |   23.2
Daily Avg Peak Gust |  25.8  26.0  29.0  30.2  31.3  30.8  29.9  29.2  27.1  26.8  26.9  26.7 |   28.3
                    |                                                                         |
Maximum Daily Avg   |  28.2  26.1  33.1  34.1  30.4  28.0  23.1  23.0  29.7  24.4  30.1  28.9 |   34.1
                    |                                                                         |
Maximum 2-Minute Avg|    45    48    53    53    47    58    49    54    44    46    43    54 |     58
                    |                                                                         |
Date of Max 2min-Day|    10    11    27    27    22    01    11    25    17    31    13    27 |
               -Year|  2000  2002  2007  2004  2008  2005  2004  2002  2006  1999  2007  2000 |
                    |                                                                         |
Maximum Peak Gust   |    56    87    64    66    58    86    59    66    53    60    53    64 |     87
                    |                                                                         |
Date of Max Gust-Day|    03    23    27    27    22    01    11    16    17    31    14    27 |
               -Year|  2003  1999  2007  2004  2008  2005  2004  2002  2006  1999  2005  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   8.7   8.8  13.2  14.7  17.1  15.5  14.7  13.9  11.6  10.8  10.5  10.1 |  149.6
   Peak Gust >=40   |   2.5   2.1   4.2   5.0   6.1   4.1   4.3   3.0   1.7   2.7   2.9   3.0 |   41.7
   Peak Gust >=50   |   0.6   0.5   1.1   0.7   0.9   0.7   0.9   0.8   0.3   0.3   0.5   0.9 |    8.4
                    |                                                                         |
   Max 2-Minute >=30|   4.9   4.3   6.8   8.3   9.4   7.8   6.8   5.7   4.3   5.2   4.7   0.0 |   68.2
   Max 2-Minute >=40|   0.5   0.3   1.5   1.2   1.5   1.9   1.2   0.9   0.3   0.5   0.5   0.0 |   10.1
                    |                                                                         |
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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.