STATION:  KALISPELL-GLACIER PARK INTERNATIONAL AIRPORT (KGPI

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        |  30.9  36.5  44.3  54.9  64.5  70.2  83.1  82.2  69.9  55.0  40.7  31.0 |   55.3
Avg Min Temp        |  16.4  19.5  24.6  30.1  38.1  44.1  47.7  46.3  39.3  29.7  24.6  18.0 |   31.5
Avg Temperature     |  23.7  28.0  34.5  42.5  51.3  57.2  65.4  64.2  54.6  42.3  32.7  24.5 |   43.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    50    53    73    78    89    94   102    99    96    78    69    51 |    102
                    |                                                                         |
    Date of Ext-Day |    01    26    30    22    24    18    06    10    02    02    12    11 |
               -Year|  1998  2005  2004  1998  2001  2003  2007  2003  1998  2003  1999  2004 |
                    |                                                                         |
    Extreme Min Temp|   -29   -16    -6    13    21    26    30    30    19     0    -2   -22 |    -29
                    |                                                                         |
    Date of Ext-Day |    05    08    01    04    08    07    03    28    23    30    20    20 |
               -Year|  2004  2001  2001  2001  1999  1999  1999  2000  2000  2002  1996  2008 |
                    |                                                                         |
Heating Degree Days |  1281  1046   946   674   426   246    67    84   316   703   970  1254 |   8014
Cooling Degree Days |     0     0     0     0     2    10    80    60     5     0     0     0 |    158
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.0   0.6   7.0   6.9   0.8   0.0   0.0   0.0 |   15.3
    Max Temp >= 75  |   0.0   0.0   0.0   0.7   4.9   9.5  26.2  25.8   9.8   0.4   0.0   0.0 |   77.4
    Max Temp <= 32  |  16.3   7.0   2.9   0.3   0.0   0.0   0.0   0.0   0.0   0.4   5.9  16.4 |   49.2
                    |                                                                         |
    Min Temp <= 32  |  29.2  27.2  27.5  19.8   8.0   0.7   0.2   0.4   4.3  19.9  24.8  29.7 |  191.7
    Min Temp <= 20  |  16.3  13.5   7.0   2.6   0.0   0.0   0.0   0.0   0.2   3.4   8.5  15.7 |   67.2
    Min Temp  <= 0  |   4.0   1.0   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.2   2.4 |    8.1
                    |                                                                         |
Avg Dew Point Temp  |  19.4  22.0  25.0  29.1  37.1  44.5  47.4  45.2  40.5  32.4  26.5  20.0 |   32.4
Avg Wet Bulb Temp   |  22.6  26.0  30.6  36.8  44.8  50.7  55.6  54.0  47.3  37.7  30.4  23.6 |   38.3
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.15 30.12 30.06 30.02 29.99 29.96 29.96 29.97 30.00 30.10 30.16 30.19 |  30.06
(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   0.6   1.2   3.4   7.5   5.5   5.8   2.6   0.7   0.0   0.0 |   27.4
    Heavy Fog       |   6.8   4.0   3.0   1.2   1.1   2.0   1.2   1.0   1.9   3.6   4.1   4.7 |   34.6
    Fog             |  20.8  16.6  13.7   8.0   8.5  10.8   6.2   5.8   9.3  13.0  17.4  16.9 |  147.0
    Hail            |   0.0   0.1   0.1   0.2   0.2   0.1   0.1   0.2   0.0   0.1   0.0   0.1 |    1.1
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  1.08  0.63  1.11  1.06  1.80  2.49  1.09  0.76  1.43  1.00  1.13  1.42 |  14.98
                    |                                                                         |
Maximum Daily       |  0.46  0.77  0.66  0.52  1.00  1.07  0.93  0.76  1.14  0.57  0.68  0.54 |   1.14
                    |                                                                         |
    Date of Ext-Day |    24    27    03    03    21    11    01    25    10    16    19    15 |
               -Year|  2004  1997  1998  2001  2002  1997  2008  2004  2005  2004  1996  1999 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  14.8   9.2  13.6  10.1  12.9  14.5   6.1   7.4   9.0   9.6  11.3  15.2 |  133.7
    >= 0.10         |   3.6   2.1   4.0   3.6   5.8   6.7   2.9   2.6   4.1   4.0   4.1   4.7 |   48.2
    >= 0.25         |   0.5   0.3   0.7   1.1   2.3   3.1   1.6   0.7   1.9   0.7   0.8   1.4 |   15.0
    >= 0.50         |   0.0   0.2   0.2   0.2   0.7   1.3   0.6   0.2   0.8   0.3   0.2   0.1 |    4.7
    >= 1.00         |   0.0   0.0   0.0   0.0   0.1   0.2   0.0   0.0   0.1   0.0   0.0   0.0 |    0.4
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   3.9   3.8   5.9   6.6   6.4   5.6   5.1   4.9   4.7   4.2   3.8   3.8 |    4.9
Daily Avg Max 2-Min |  12.4  12.5  16.7  18.4  18.4  17.0  16.7  16.6  15.7  14.4  12.1  11.9 |   15.2
Daily Avg Peak Gust |  15.1  15.4  20.9  23.0  23.4  21.7  21.7  21.4  20.0  18.1  15.3  15.0 |   19.3
                    |                                                                         |
Maximum Daily Avg   |  20.8  23.3  20.9  21.3  14.9  12.0  12.4  14.4  16.7  17.4  16.4  22.6 |   23.3
                    |                                                                         |
Maximum 2-Minute Avg|    36    38    36    43    37    38    38    33    34    36    39    33 |     43
                    |                                                                         |
Date of Max 2min-Day|    20    22    05    04    31    01    19    14    02    31    19    13 |
               -Year|  2008  2003  2002  2000  1997  2001  2004  1996  1997  1999  2003  2008 |
                    |                                                                         |
Maximum Peak Gust   |    46    46    44    53    52    48    47    44    45    46    47    46 |     53
                    |                                                                         |
Date of Max Gust-Day|    20    22    05    04    31    01    19    14    02    31    19    13 |
               -Year|  2008  2003  2002  2000  1997  2001  2004  1996  1997  1999  2003  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   2.0   1.2   4.0   5.4   5.5   3.6   3.7   4.3   3.0   2.5   1.9   1.8 |   38.9
   Peak Gust >=40   |   0.6   0.3   0.6   0.4   0.7   0.1   0.4   0.6   0.3   0.3   0.3   0.3 |    4.8
   Peak Gust >=50   |   0.0   0.0   0.0   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.2
                    |                                                                         |
   Max 2-Minute >=30|   0.9   0.4   1.1   1.1   0.7   0.2   0.6   0.8   0.4   0.5   0.3   0.0 |    7.0
   Max 2-Minute >=40|   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
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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.