STATION:  MC GRATH AIRPORT (PAMC), 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        |   1.3  15.4  23.6  41.6  57.9  69.2  69.5  64.2  54.3  32.7  14.5   4.9 |   37.4
Avg Min Temp        | -16.6  -6.6  -2.6  20.1  36.5  47.4  50.9  46.1  36.8  18.9  -0.2 -12.4 |   18.2
Avg Temperature     |  -7.7   4.4  10.5  30.9  47.2  58.3  60.2  55.2  45.5  25.8   7.2  -3.7 |   27.8
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    45    49    55    66    82    87    86    87    74    66    49    45 |     87
                    |                                                                         |
    Date of Ext-Day |    30    01    20    30    25    30    04    18    04    09    09    03 |
               -Year|  2007  2007  1998  2004  2002  1998  1997  2004  1996  2006  1997  2002 |
                    |                                                                         |
    Extreme Min Temp|   -57   -61   -41   -28    -2    27    31    29    16   -20   -39   -59 |    -61
                    |                                                                         |
    Date of Ext-Day |    05    01    30    01    03    04    17    28    22    31    27    31 |
               -Year|  1997  1999  2004  2004  2001  2006  2003  1996  2003  1997  2005  1999 |
                    |                                                                         |
Heating Degree Days |  2253  1713  1689  1024   551   209   159   310   584  1215  1734  2130 |  13572
Cooling Degree Days |     0     0     0     0     0     8    10     5     0     0     0     0 |     23
                    |                                                                         |
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   1.3   7.9   8.8   3.2   0.0   0.0   0.0   0.0 |   21.2
    Max Temp <= 32  |  28.5  25.1  23.3   5.4   0.2   0.0   0.0   0.0   0.0  15.1  26.2  30.0 |  153.8
                    |                                                                         |
    Min Temp <= 32  |  30.9  28.1  30.7  26.8   9.5   0.3   0.1   0.6   9.6  27.5  29.5  31.0 |  224.4
    Min Temp <= 20  |  29.8  26.7  28.7  11.5   0.6   0.0   0.0   0.0   0.3  14.2  26.2  30.3 |  168.3
    Min Temp  <= 0  |  23.9  16.6  17.6   3.4   0.1   0.0   0.0   0.0   0.0   3.5  16.4  23.0 |  104.4
                    |                                                                         |
Avg Dew Point Temp  |  -1.2   5.0   2.0  19.5  32.9  44.9  50.1  47.5  38.1  22.8   3.8  -1.9 |   22.0
Avg Wet Bulb Temp   |  -0.3   7.3   9.4  27.1  41.2  51.6  54.5  51.1  42.0  25.8   7.0   0.3 |   26.4
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.21 30.12 30.18 30.10 30.00 29.96 29.90 29.99 30.00 30.04 30.07 30.15 |  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   |   0.0   0.0   0.0   0.0   0.4   2.1   2.3   0.3   0.2   0.0   0.0   0.0 |    5.4
    Heavy Fog       |   1.7   2.0   0.5   0.8   0.1   0.5   0.7   2.3   0.9   1.3   1.6   1.7 |   14.0
    Fog             |  14.5  12.3   6.6   7.8   6.5   6.7   9.9  13.2  11.4  13.3  13.0  15.5 |  130.9
    Hail            |   0.3   0.1   0.1   0.2   0.3   0.1   0.0   0.0   0.1   0.1   0.0   0.0 |    1.1
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  0.84  0.77  0.48  0.85  1.03  1.53  2.50  2.93  2.37  1.18  1.08  0.89 |  16.47
                    |                                                                         |
Maximum Daily       |  1.08  0.63  0.73  0.49  0.74  0.67  1.40  1.28  1.82  0.79  0.70  1.00 |   1.82
                    |                                                                         |
    Date of Ext-Day |    03    08    30    27    18    24    06    25    21    07    10    22 |
               -Year|  2005  2003  2008  2004  2005  2004  1998  1996  2000  2006  2000  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   8.8   8.6   7.4   7.4   8.9  11.7  15.3  15.7  13.8  11.9  11.0  11.2 |  131.8
    >= 0.10         |   2.5   2.8   1.3   2.6   3.4   4.7   7.3   8.2   6.0   3.8   3.8   2.7 |   49.1
    >= 0.25         |   0.8   0.8   0.3   1.2   1.1   2.1   3.0   4.6   3.1   1.4   0.9   0.8 |   20.1
    >= 0.50         |   0.3   0.3   0.2   0.0   0.3   0.6   0.9   1.7   1.2   0.2   0.2   0.2 |    5.9
    >= 1.00         |   0.1   0.0   0.0   0.0   0.0   0.0   0.2   0.1   0.2   0.0   0.0   0.1 |    0.6
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   1.8   2.4   4.3   5.1   5.3   4.5   4.4   3.9   4.0   3.6   2.4   1.5 |    3.6
Daily Avg Max 2-Min |   7.5   9.2  11.9  13.6  14.6  13.5  12.5  11.8  11.9  10.5   8.3   7.1 |   11.0
Daily Avg Peak Gust |   9.6  11.5  15.1  17.8  19.3  18.1  17.0  16.1  16.2  13.8  10.5   8.9 |   14.5
                    |                                                                         |
Maximum Daily Avg   |  16.9  13.9  20.5  17.4  14.6  10.6  12.6  10.1  12.5  15.9  15.1  10.0 |   20.5
                    |                                                                         |
Maximum 2-Minute Avg|    35    39    36    39    30    30    30    23    28    30    31    35 |     39
                    |                                                                         |
Date of Max 2min-Day|    22    02    13    22    23    27    04    16    25    17    05    02 |
               -Year|  2008  2000  2003  2005  2008  1999  2007  1998  1998  2005  2002  2007 |
                    |                                                                         |
Maximum Peak Gust   |    54    63    44    52    40    35    41    34    45    41    38    46 |     63
                    |                                                                         |
Date of Max Gust-Day|    22    02    13    22    12    30    04    20    25    17    05    02 |
               -Year|  2008  2000  2003  2005  2008  2006  2007  1998  1998  2005  2002  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   0.9   1.3   1.3   1.2   1.4   0.7   0.6   0.6   0.8   1.0   0.6   0.3 |   10.9
   Peak Gust >=40   |   0.3   0.2   0.2   0.4   0.2   0.0   0.1   0.0   0.2   0.1   0.0   0.1 |    1.5
   Peak Gust >=50   |   0.1   0.1   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.3
                    |                                                                         |
   Max 2-Minute >=30|   0.1   0.1   0.2   0.2   0.1   0.1   0.1   0.0   0.0   0.1   0.2   0.0 |    1.0
   Max 2-Minute >=40|   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
                    |                                                                         |
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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.