STATION:  ANNETTE ISLAND AIRPORT (PANT), AK

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        |  41.0  42.8  43.9  49.8  55.9  61.3  63.2  64.2  58.1  51.5  45.0  41.6 |   51.5
Avg Min Temp        |  32.1  33.1  33.6  38.0  43.8  49.6  52.7  53.1  48.1  42.1  35.6  32.8 |   41.2
Avg Temperature     |  36.5  37.9  38.8  43.9  49.8  55.4  57.9  58.7  53.1  46.8  40.3  37.2 |   46.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    59    57    61    76    84    93    79    83    75    68    61    56 |     93
                    |                                                                         |
    Date of Ext-Day |    30    13    21    23    27    19    25    10    12    02    29    20 |
               -Year|  2000  2004  1998  2005  1998  2004  1996  2005  2007  2008  2002  2005 |
                    |                                                                         |
    Extreme Min Temp|     4     9    11    28    32    40    43    43    33    26    10     7 |      4
                    |                                                                         |
    Date of Ext-Day |    12    03    08    03    03    02    10    31    30    30    28    01 |
               -Year|  2005  2004  2003  2002  1999  2001  2008  1999  1996  2006  2006  2001 |
                    |                                                                         |
Heating Degree Days |   882   765   813   634   470   294   221   201   356   563   741   862 |   6803
Cooling Degree Days |     0     0     0     0     0     6     2     5     0     0     0     0 |     14
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0 |    0.2
    Max Temp >= 75  |   0.0   0.0   0.0   0.1   0.5   1.8   1.2   1.8   0.1   0.0   0.0   0.0 |    5.5
    Max Temp <= 32  |   4.5   0.5   1.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.4   2.9 |   10.6
                    |                                                                         |
    Min Temp <= 32  |  14.5  12.7  12.6   3.3   0.2   0.0   0.0   0.0   0.0   1.5   9.1  13.8 |   67.6
    Min Temp <= 20  |   4.3   1.3   1.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.8   2.4 |    9.9
    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  |  31.7  32.5  31.6  36.2  41.8  48.2  52.6  53.4  49.1  41.6  35.2  32.0 |   40.5
Avg Wet Bulb Temp   |  35.0  35.9  36.2  40.7  46.0  51.5  54.9  55.6  51.0  44.0  38.5  35.7 |   43.8
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.17 30.19 30.12 30.04 30.05 30.05 30.06 30.03 30.05 30.11 30.12 30.22 |  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   0.1   0.1   0.0   0.1   0.0   0.2   0.1   0.0   0.2   0.1 |    0.7
    Heavy Fog       |   2.0   1.3   0.7   0.9   1.2   0.3   1.5   1.4   1.7   1.8   0.5   0.6 |   13.6
    Fog             |  21.0  15.5  19.1  15.8  14.5  14.1  13.5  13.8  18.6  18.2  17.3  19.5 |  200.8
    Hail            |   0.2   0.1   0.4   0.7   0.1   0.1   0.0   0.0   0.0   0.2   0.4   0.2 |    2.3
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     | 10.41  7.39  7.96  7.28  6.14  4.87  5.27  8.68 10.14 13.52 11.22 10.90 | 103.78
                    |                                                                         |
Maximum Daily       |  2.65  2.40  2.56  3.06  2.59  2.35  1.91  3.28  2.57  5.48  2.95  4.01 |   5.48
                    |                                                                         |
    Date of Ext-Day |    30    11    26    07    14    27    24    21    21    25    18    12 |
               -Year|  2005  2005  2000  2006  2008  2008  2000  2000  2001  2003  2006  1997 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  23.4  18.5  23.0  18.4  16.3  16.9  17.8  16.9  20.9  23.8  22.2  23.5 |  241.6
    >= 0.10         |  17.5  12.5  16.6  12.7  11.8  10.6  10.2  12.4  14.9  18.5  17.3  17.8 |  173.0
    >= 0.25         |  12.8   9.0  11.0   8.5   7.1   6.4   6.5   9.1  11.7  14.0  14.1  13.5 |  123.9
    >= 0.50         |   7.7   5.3   5.2   5.4   3.7   3.1   3.9   6.0   7.5   9.6   7.9   7.5 |   72.8
    >= 1.00         |   2.6   1.8   1.5   1.9   1.8   0.8   1.1   3.2   3.2   4.4   2.9   2.8 |   28.0
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   8.8   8.0   8.6   7.7   7.0   6.5   5.8   6.0   6.6   8.0   8.3   9.3 |    7.6
Daily Avg Max 2-Min |  19.2  17.6  19.0  16.7  15.1  13.8  12.7  13.4  15.0  18.3  18.9  20.6 |   16.7
Daily Avg Peak Gust |  26.4  24.0  26.0  22.3  19.9  18.4  17.0  18.0  20.4  25.4  26.1  28.5 |   22.7
                    |                                                                         |
Maximum Daily Avg   |  25.5  23.0  24.2  24.9  18.9  19.0  17.2  17.6  21.9  22.9  24.0  25.5 |   25.5
                    |                                                                         |
Maximum 2-Minute Avg|    40    46    41    37    35    29    32    32    38    48    44    44 |     48
                    |                                                                         |
Date of Max 2min-Day|    13    05    06    07    02    24    15    26    06    27    23    22 |
               -Year|  1999  1999  2004  2004  2001  2002  1998  2001  2003  1998  2008  2003 |
                    |                                                                         |
Maximum Peak Gust   |    61    62    56    55    49    43    46    44    49    69    69    63 |     69
                    |                                                                         |
Date of Max Gust-Day|    15    05    28    07    02    24    08    27    22    19    19    23 |
               -Year|  2007  1999  2007  2004  2001  2002  2006  2001  1999  2008  2006  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  11.6   8.6   9.4   7.0   3.4   1.8   1.4   2.9   5.2   9.7  10.9  13.3 |   85.3
   Peak Gust >=40   |   3.6   2.1   3.4   2.2   0.6   0.1   0.2   0.5   0.9   4.2   3.2   5.9 |   26.9
   Peak Gust >=50   |   0.8   0.4   1.0   0.3   0.0   0.0   0.0   0.0   0.0   0.9   0.9   2.2 |    6.5
                    |                                                                         |
   Max 2-Minute >=30|   3.4   2.3   3.2   1.8   0.5   0.0   0.1   0.5   0.7   3.4   2.9   0.0 |   18.9
   Max 2-Minute >=40|   0.3   0.2   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.3   0.3   0.0 |    1.1
                    |                                                                         |
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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.