STATION:  ANCHORAGE-TED STEVENS ANCHORAGE INTL AIRPORT (PANC

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        |  22.7  28.4  32.2  44.3  55.8  62.9  65.7  63.8  55.3  40.3  28.5  24.7 |   43.7
Avg Min Temp        |  10.9  16.3  18.8  29.1  39.2  47.7  52.5  50.2  42.1  28.9  17.7  13.0 |   30.5
Avg Temperature     |  16.8  22.3  25.5  36.7  47.5  55.3  59.1  57.0  48.7  34.6  23.1  18.8 |   37.1
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    46    56    46    69    77    80    84    81    71    64    54    48 |     84
                    |                                                                         |
    Date of Ext-Day |    14    16    03    29    21    28    08    16    05    09    26    26 |
               -Year|  1997  2006  2003  2005  2002  1997  2003  2004  1996  2006  2002  1999 |
                    |                                                                         |
    Extreme Min Temp|   -20   -28    -8     1     1    37    40    34    25     1    -9   -15 |    -28
                    |                                                                         |
    Date of Ext-Day |    06    04    10    01    06    03    01    28    23    27    26    16 |
               -Year|  1997  1999  1999  2004  2008  2000  2008  1998  1996  1996  2006  2001 |
                    |                                                                         |
Heating Degree Days |  1494  1205  1225   849   543   292   186   249   488   944  1258  1431 |  10165
Cooling Degree Days |     0     0     0     0     0     1     3     1     0     0     0     0 |      5
                    |                                                                         |
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   0.2   1.0   1.7   1.2   0.0   0.0   0.0   0.0 |    4.1
    Max Temp <= 32  |  24.6  17.5  14.2   2.0   0.1   0.0   0.0   0.0   0.0   6.0  20.6  23.8 |  108.7
                    |                                                                         |
    Min Temp <= 32  |  30.8  27.0  29.7  20.3   3.6   0.0   0.0   0.0   2.4  19.8  27.1  30.7 |  191.3
    Min Temp <= 20  |  22.5  15.9  16.5   3.3   0.1   0.0   0.0   0.0   0.0   5.0  17.2  22.3 |  102.9
    Min Temp  <= 0  |   6.6   3.8   1.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   2.3   4.9 |   18.8
                    |                                                                         |
Avg Dew Point Temp  |  11.2  14.8  15.1  25.1  34.3  44.1  49.8  49.3  41.4  29.2  18.2  13.8 |   28.9
Avg Wet Bulb Temp   |  15.9  19.7  22.8  32.4  41.9  49.7  54.0  52.9  45.3  33.4  22.6  17.9 |   34.0
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.22 30.17 30.20 30.08 30.02 29.96 29.93 29.98 30.05 30.12 30.07 30.28 |  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   |   0.0   0.0   0.0   0.0   0.0   0.4   0.5   0.6   0.2   0.1   0.0   0.0 |    1.8
    Heavy Fog       |   3.1   2.7   1.0   0.4   0.2   0.0   0.0   0.2   0.4   1.3   3.7   3.1 |   15.9
    Fog             |  13.5  10.2   7.8   4.8   3.7   3.7   5.3   7.9   7.9   9.0  11.6  12.7 |   98.2
    Hail            |   0.5   0.3   0.1   0.2   0.0   0.0   0.0   0.2   0.2   0.3   0.5   0.2 |    2.5
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.65  0.58  0.50  0.45  0.62  1.10  1.82  3.27  3.12  1.73  1.05  1.16 |  16.05
                    |                                                                         |
Maximum Daily       |  0.56  0.55  0.70  0.97  0.56  0.79  1.52  2.76  1.30  1.34  1.97  0.64 |   2.76
                    |                                                                         |
    Date of Ext-Day |    16    14    17    25    30    24    04    21    30    01    02    21 |
               -Year|  2008  2005  2002  2008  1997  2007  2001  1997  2004  2002  2007  1999 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   8.7   6.1   5.2   5.6   6.4   8.8  11.8  13.9  14.8  11.7   8.8  10.4 |  112.2
    >= 0.10         |   2.2   2.1   1.8   1.2   1.9   3.4   5.0   8.2   8.2   5.2   3.0   3.9 |   46.0
    >= 0.25         |   0.3   0.5   0.4   0.3   0.8   1.3   2.2   4.2   4.4   2.0   1.1   1.4 |   18.9
    >= 0.50         |   0.1   0.1   0.1   0.1   0.2   0.5   0.8   1.5   1.4   0.8   0.2   0.2 |    6.1
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.3   0.3   0.2   0.1   0.0 |    1.1
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   6.0   5.7   7.1   6.9   8.0   7.7   7.1   6.0   6.5   5.9   5.8   5.6 |    6.5
Daily Avg Max 2-Min |  14.5  14.0  16.5  16.1  17.3  17.1  16.0  14.8  15.8  14.7  14.3  14.3 |   15.5
Daily Avg Peak Gust |  19.7  19.5  22.8  23.2  25.1  24.6  23.4  21.5  22.7  20.5  19.6  19.7 |   21.9
                    |                                                                         |
Maximum Daily Avg   |  20.5  19.8  28.7  21.1  18.8  19.3  18.3  20.9  17.2  18.8  22.3  17.6 |   28.7
                    |                                                                         |
Maximum 2-Minute Avg|    35    41    54    37    29    33    30    49    33    34    36    38 |     54
                    |                                                                         |
Date of Max 2min-Day|    06    02    13    22    30    13    05    15    21    02    26    21 |
               -Year|  2004  2000  2003  2005  2002  1999  1999  2008  2000  1996  2002  1999 |
                    |                                                                         |
Maximum Peak Gust   |    48    57    71    51    43    46    40    49    47    47    45    49 |     71
                    |                                                                         |
Date of Max Gust-Day|    22    02    12    22    23    05    05    15    21    02    23    21 |
               -Year|  2008  2000  2003  2005  2008  2007  1999  2008  2000  1996  2002  1999 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   4.5   3.9   6.5   6.5   8.3   7.0   6.4   3.5   5.7   4.0   4.2   4.3 |   64.9
   Peak Gust >=40   |   1.2   0.6   1.4   0.7   0.3   0.4   0.1   0.3   0.3   0.7   0.7   0.7 |    7.4
   Peak Gust >=50   |   0.0   0.1   0.4   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.6
                    |                                                                         |
   Max 2-Minute >=30|   1.2   0.5   1.2   0.4   0.0   0.3   0.2   0.2   0.2   0.6   0.8   0.0 |    5.6
   Max 2-Minute >=40|   0.0   0.1   0.3   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0 |    0.5
                    |                                                                         |
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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.