STATION:  BELLINGHAM INTL AIRPORT (KBLI), WA

CLIMATOLOGICAL SUMMARY.  Period of Record: Sep 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        |  45.5  48.0  51.0  56.4  61.5  66.3  71.0  71.2  66.0  57.6  50.1  44.9 |   57.5
Avg Min Temp        |  33.7  33.1  36.4  39.4  44.7  49.9  53.4  52.9  46.9  41.6  37.0  33.3 |   41.9
Avg Temperature     |  39.6  40.6  43.7  47.9  53.1  58.1  62.2  62.0  56.4  49.6  43.6  39.1 |   49.7
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    63    60    76    77    84    84    94    89    87    74    79    66 |     94
                    |                                                                         |
    Date of Ext-Day |    19    24    29    11    26    12    11    09    28    06    07    04 |
               -Year|  2005  2005  2004  2004  2005  1999  2007  2004  2003  1998  2001  2006 |
                    |                                                                         |
    Extreme Min Temp|    10    20    20    26    31    37    41    41    33    22    12    10 |     10
                    |                                                                         |
    Date of Ext-Day |    14    19    06    01    10    02    03    28    23    31    29    22 |
               -Year|  2007  2006  2002  2008  1999  1999  2000  2000  2000  2002  2006  1998 |
                    |                                                                         |
Heating Degree Days |   787   690   661   514   370   210   103   102   258   478   643   803 |   5619
Cooling Degree Days |     0     0     0     0     0     4    17    10     0     0     0     0 |     31
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0   0.0 |    0.1
    Max Temp >= 75  |   0.0   0.0   0.1   0.4   1.2   4.3   7.7   8.2   2.3   0.0   0.1   0.0 |   24.3
    Max Temp <= 32  |   1.6   0.0   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   1.7 |    3.8
                    |                                                                         |
    Min Temp <= 32  |  12.4  13.3   7.9   3.5   0.2   0.0   0.0   0.0   0.0   2.4   9.8  13.7 |   63.2
    Min Temp <= 20  |   1.8   0.1   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   2.0 |    4.5
    Min Temp  <= 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 |    0.0
                    |                                                                         |
Avg Dew Point Temp  |  34.2  33.3  36.3  39.2  45.1  49.8  53.4  54.1  50.2  43.9  37.7  33.2 |   42.5
Avg Wet Bulb Temp   |  37.5  37.5  40.5  43.9  49.1  53.6  57.0  57.4  52.7  46.5  40.7  36.5 |   46.1
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.13 30.16 30.11 30.06 30.07 30.05 30.06 30.03 30.05 30.11 30.14 30.15 |  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   |   0.3   0.8   0.8   0.2   0.1   0.6   0.3   0.1   0.5   0.5   0.5   0.5 |    5.2
    Heavy Fog       |   4.0   3.4   1.9   0.9   0.7   0.4   0.7   1.8   5.7   7.0   3.9   3.3 |   33.6
    Fog             |  21.1  16.1  16.6  13.8  13.8  11.8   8.6  11.9  18.9  20.1  18.5  17.5 |  188.7
    Hail            |   0.1   0.0   0.0   0.1   0.0   0.0   0.0   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     |  4.56  2.39  3.39  2.20  2.30  1.81  0.73  1.46  1.62  3.41  5.22  4.29 |  33.38
                    |                                                                         |
Maximum Daily       |  1.45  1.65  1.46  0.91  1.28  0.79  0.63  1.12  0.98  2.46  2.64  1.55 |   2.64
                    |                                                                         |
    Date of Ext-Day |    17    21    11    11    27    03    22    24    29    16    24    13 |
               -Year|  2005  2002  2007  2005  2004  2008  2000  2004  2005  2003  2004  2001 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  21.6  16.9  19.4  15.2  14.5  11.6   5.7   7.7  14.2  18.4  21.1  21.5 |  187.7
    >= 0.10         |  12.5   7.5  10.6   7.1   6.7   6.7   2.0   3.1   4.4   8.7  11.5  11.7 |   92.5
    >= 0.25         |   6.5   2.7   4.5   2.9   2.6   2.3   1.1   2.2   2.3   4.2   6.7   6.2 |   44.2
    >= 0.50         |   2.5   0.7   1.4   0.7   1.2   0.5   0.4   1.2   0.9   1.7   3.4   2.3 |   16.9
    >= 1.00         |   0.4   0.2   0.1   0.0   0.1   0.0   0.0   0.1   0.0   0.5   0.7   0.2 |    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|   8.4   7.3   8.3   6.9   6.5   7.1   7.4   6.5   5.0   5.8   7.5   8.4 |    7.1
Daily Avg Max 2-Min |  20.9  18.5  19.9  17.3  15.5  15.5  15.5  14.8  13.5  16.3  19.3  20.0 |   17.2
Daily Avg Peak Gust |  26.8  23.7  25.2  22.0  19.7  19.7  19.6  18.7  17.3  21.1  24.9  25.8 |   22.0
                    |                                                                         |
Maximum Daily Avg   |  28.6  25.4  27.1  20.4  17.2  16.7  15.1  14.7  17.1  23.0  26.4  30.0 |   30.0
                    |                                                                         |
Maximum 2-Minute Avg|    51    49    51    38    35    28    29    29    39    40    57    52 |     57
                    |                                                                         |
Date of Max 2min-Day|    29    05    03    01    28    27    08    21    24    17    24    11 |
               -Year|  1999  1999  1999  2005  2001  2008  2005  2001  1999  2003  1998  2006 |
                    |                                                                         |
Maximum Peak Gust   |    66    62    63    49    41    33    43    37    52    54    74    62 |     74
                    |                                                                         |
Date of Max Gust-Day|    29    04    03    01    28    28    04    15    24    29    12    11 |
               -Year|  1999  2006  1999  2005  2001  2002  2008  2003  1999  2004  2007  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  11.7   7.9   8.7   4.9   2.2   1.2   1.6   0.8   1.3   6.3  10.5  11.1 |   68.2
   Peak Gust >=40   |   5.7   3.4   3.5   1.2   0.1   0.0   0.2   0.0   0.4   2.3   4.5   5.4 |   26.7
   Peak Gust >=50   |   1.4   0.8   0.7   0.0   0.0   0.0   0.0   0.0   0.1   0.5   1.4   2.1 |    7.0
                    |                                                                         |
   Max 2-Minute >=30|   6.3   3.9   4.2   1.3   0.2   0.0   0.0   0.0   0.5   2.3   5.2   0.0 |   23.9
   Max 2-Minute >=40|   1.1   0.5   0.5   0.0   0.0   0.0   0.0   0.0   0.0   0.1   1.2   0.0 |    3.5
                    |                                                                         |
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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.