STATION:  KETCHIKAN INTL AIRPORT (PAKT), AK

CLIMATOLOGICAL SUMMARY.  Period of Record: Jan 1997 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        |  38.8  40.9  42.8  49.1  55.8  61.5  63.4  64.4  58.2  50.7  43.6  40.2 |   50.8
Avg Min Temp        |  29.9  30.8  30.9  34.8  40.9  47.9  51.5  51.8  46.9  40.2  34.5  31.7 |   39.3
Avg Temperature     |  34.4  35.9  36.9  42.0  48.3  54.7  57.4  58.1  52.6  45.4  39.1  36.0 |   45.1
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    57    56    61    72    77    85    79    80    69    63    61    53 |     85
                    |                                                                         |
    Date of Ext-Day |    30    01    21    27    24    17    02    11    30    05    22    14 |
               -Year|  2000  1998  1998  2005  2008  2005  1998  2005  2008  2001  2002  2002 |
                    |                                                                         |
    Extreme Min Temp|    -1     7     6    19    27    35    39    39    32    23     5     7 |     -1
                    |                                                                         |
    Date of Ext-Day |    25    02    08    03    03    03    03    30    23    11    28    01 |
               -Year|  1997  2004  2002  2007  2002  2003  2002  1998  2003  1997  2006  2001 |
                    |                                                                         |
Heating Degree Days |   950   823   872   691   517   312   236   216   373   606   778   899 |   7275
Cooling Degree Days |     0     0     0     0     0     4     2     3     0     0     0     0 |      8
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   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
    Max Temp >= 75  |   0.0   0.0   0.0   0.0   0.3   1.6   1.1   1.5   0.0   0.0   0.0   0.0 |    4.5
    Max Temp <= 32  |   5.3   1.4   1.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.2   3.4 |   12.7
                    |                                                                         |
    Min Temp <= 32  |  16.7  16.8  18.1  10.8   3.0   0.0   0.0   0.0   0.1   3.9  10.5  16.5 |   96.5
    Min Temp <= 20  |   4.8   2.3   2.6   0.2   0.0   0.0   0.0   0.0   0.0   0.0   1.2   2.8 |   13.8
    Min Temp  <= 0  |   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.3
                    |                                                                         |
Avg Dew Point Temp  |  31.1  32.1  31.4  35.7  41.4  47.6  52.1  51.7  48.7  41.8  36.0  32.6 |   40.2
Avg Wet Bulb Temp   |  33.4  34.6  34.9  39.4  45.2  51.0  54.4  54.0  50.5  43.8  38.0  35.0 |   42.9
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.16 30.18 30.12 30.05 30.04 30.04 30.05 30.03 30.06 30.12 30.14 30.18 |  30.10
(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   0.0   0.0   0.0   0.2   0.2   0.3   0.1   0.2   0.1   0.0 |    1.1
    Heavy Fog       |   2.4   1.7   1.2   0.9   0.4   0.4   1.0   1.0   1.5   2.0   1.8   2.3 |   16.7
    Fog             |  23.1  17.8  20.9  17.8  16.6  15.3  17.8  16.4  19.7  21.2  19.9  22.6 |  229.0
    Hail            |   0.0   0.0   0.2   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.1   0.0 |    0.3
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     | 17.23 12.34 13.58 12.42 10.35  7.53  9.67 12.83 15.65 19.60 18.18 18.78 | 168.16
                    |                                                                         |
Maximum Daily       |  4.72  3.91  4.35  4.40  4.25  3.80  4.86  4.82  4.17  4.53  6.05  5.08 |   6.05
                    |                                                                         |
    Date of Ext-Day |    14    11    24    11    23    24    24    26    08    21    08    12 |
               -Year|  2004  2005  1997  2008  2003  2002  2000  2002  1999  2008  2005  1997 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  23.4  19.2  23.1  19.6  17.9  17.9  19.8  17.6  22.0  24.8  22.6  23.5 |  251.4
    >= 0.10         |  18.6  14.3  18.0  15.3  13.5  12.0  13.1  12.4  17.0  20.2  19.2  19.2 |  192.9
    >= 0.25         |  14.5  11.0  13.4  10.6   9.9   8.8   9.0  10.0  12.0  16.2  15.9  16.6 |  147.7
    >= 0.50         |  11.2   8.8   8.7   7.5   6.5   4.9   5.8   7.7   9.3  11.7  12.0  12.1 |  106.3
    >= 1.00         |   6.2   3.9   4.1   4.2   3.4   1.8   2.7   4.2   6.1   7.3   5.8   6.8 |   56.4
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   8.0   8.1   8.2   8.1   7.7   7.4   7.2   7.0   7.1   7.5   7.6   8.2 |    7.7
Daily Avg Max 2-Min |  18.3  18.4  19.2  18.4  16.6  15.5  15.1  15.3  16.5  18.8  19.0  20.4 |   17.6
Daily Avg Peak Gust |  24.9  24.3  25.6  24.0  21.9  20.5  20.0  20.3  22.2  25.3  25.5  27.4 |   23.5
                    |                                                                         |
Maximum Daily Avg   |  20.8  24.1  21.2  22.9  19.5  16.7  16.7  19.6  19.1  19.6  20.8  23.8 |   24.1
                    |                                                                         |
Maximum 2-Minute Avg|    43    38    53    40    33    30    32    31    37    45    54    45 |     54
                    |                                                                         |
Date of Max 2min-Day|    26    07    29    23    05    05    14    31    29    23    10    18 |
               -Year|  2003  2006  2004  2001  1999  1999  2005  2001  2001  2007  2007  2004 |
                    |                                                                         |
Maximum Peak Gust   |    64    56    74    60    48    38    45    46    54    59    63    66 |     74
                    |                                                                         |
Date of Max Gust-Day|    15    07    29    12    16    27    08    28    06    24    10    22 |
               -Year|  2007  2006  2004  2008  2006  1999  2006  1999  2003  2005  2007  2003 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  10.6   8.6   9.3   7.2   4.2   1.6   1.9   2.9   5.5   9.7  11.0  12.5 |   85.0
   Peak Gust >=40   |   3.8   2.4   3.6   2.2   0.4   0.0   0.2   0.3   1.3   4.3   3.6   6.1 |   28.1
   Peak Gust >=50   |   0.6   0.1   0.4   0.3   0.0   0.0   0.0   0.0   0.3   1.0   0.8   1.7 |    5.0
                    |                                                                         |
   Max 2-Minute >=30|   3.4   2.8   3.5   2.2   0.6   0.2   0.3   0.2   1.2   4.2   3.8   0.0 |   22.3
   Max 2-Minute >=40|   0.3   0.0   0.1   0.2   0.0   0.0   0.0   0.0   0.0   0.6   0.3   0.0 |    1.4
                    |                                                                         |
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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.