STATION:  ASTORIA REGIONAL AIRPORT (KAST), OR

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        |  49.5  51.3  52.8  56.1  60.6  64.0  67.9  68.7  67.2  60.6  54.5  49.3 |   58.6
Avg Min Temp        |  38.2  37.4  39.0  40.9  46.3  50.5  53.8  53.9  49.5  44.9  40.8  38.2 |   44.5
Avg Temperature     |  43.8  44.4  45.9  48.5  53.5  57.3  60.8  61.3  58.4  52.8  47.6  43.8 |   51.5
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    66    68    70    83    93    90    96    95    88    81    71    62 |     96
                    |                                                                         |
    Date of Ext-Day |    19    23    06    16    16    05    23    13    10    09    11    24 |
               -Year|  2005  2005  2001  1999  2008  2003  2004  2002  2007  1996  1999  2005 |
                    |                                                                         |
    Extreme Min Temp|    20    19    28    29    34    39    43    43    36    29    25    16 |     16
                    |                                                                         |
    Date of Ext-Day |    13    19    22    02    09    04    11    28    23    30    29    23 |
               -Year|  1997  2006  2001  2008  2006  2001  2008  2000  2000  2002  2006  1998 |
                    |                                                                         |
Heating Degree Days |   656   583   591   496   361   235   135   118   202   380   521   659 |   4936
Cooling Degree Days |     0     0     0     0     3     2     6     4     4     0     0     0 |     20
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.3   0.1   0.2   0.1   0.0   0.0   0.0   0.0 |    0.6
    Max Temp >= 75  |   0.0   0.0   0.0   0.8   1.3   1.6   2.6   3.0   3.3   0.7   0.0   0.0 |   13.1
    Max Temp <= 32  |   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3 |    0.4
                    |                                                                         |
    Min Temp <= 32  |   5.7   5.6   3.2   1.4   0.0   0.0   0.0   0.0   0.0   0.5   3.3   5.2 |   25.0
    Min Temp <= 20  |   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3 |    0.5
    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  |  39.4  38.6  40.9  42.4  47.4  51.1  54.6  54.6  52.5  47.7  43.1  39.4 |   46.0
Avg Wet Bulb Temp   |  41.8  41.8  43.6  45.4  50.3  53.8  56.9  56.7  54.9  50.1  45.5  41.9 |   48.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.10 30.12 30.09 30.06 30.07 30.07 30.07 30.05 30.03 30.08 30.10 30.17 |  30.08
(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   |   1.2   1.0   0.9   0.6   0.2   0.2   0.0   0.2   0.9   1.0   1.0   1.2 |    8.3
    Heavy Fog       |   2.8   3.4   2.7   1.8   1.3   1.5   2.2   2.5   6.1   5.2   4.0   1.9 |   35.3
    Fog             |  22.5  18.2  22.4  18.1  17.6  17.2  13.9  15.4  19.8  20.6  19.6  19.7 |  225.1
    Hail            |   0.2   0.8   1.1   0.4   0.3   0.0   0.0   0.0   0.0   0.0   0.2   0.2 |    3.1
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     | 12.15  6.70  8.58  4.49  3.32  2.57  1.01  1.41  2.11  6.29 11.00 11.93 |  71.55
                    |                                                                         |
Maximum Daily       |  2.91  1.81  2.61  1.92  1.32  1.48  1.19  1.92  2.67  2.48  5.56  2.76 |   5.56
                    |                                                                         |
    Date of Ext-Day |    05    22    26    15    14    28    18    22    16    31    25    24 |
               -Year|  2006  1999  2005  2005  2001  2002  1996  2001  1997  2005  1998  1996 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  23.4  19.4  23.4  18.9  17.9  15.6   9.5  10.5  14.2  19.7  21.7  23.0 |  217.2
    >= 0.10         |  19.2  13.9  16.5  11.7   9.0   7.0   2.5   2.7   4.9  12.3  16.2  18.0 |  133.7
    >= 0.25         |  14.0   9.2  11.1   6.8   5.0   3.4   1.2   1.5   3.0   8.5  12.0  14.1 |   89.9
    >= 0.50         |   9.4   4.5   5.3   2.5   1.9   1.3   0.4   0.8   1.0   4.1   7.8   8.3 |   47.3
    >= 1.00         |   3.2   1.2   2.0   0.3   0.3   0.2   0.2   0.3   0.2   1.5   2.7   3.2 |   15.3
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   8.3   7.7   7.9   7.4   7.5   7.5   8.0   7.1   6.5   6.6   7.5   8.6 |    7.6
Daily Avg Max 2-Min |  20.3  18.9  19.8  18.4  17.4  17.1  17.4  16.7  16.5  17.2  19.1  20.5 |   18.3
Daily Avg Peak Gust |  26.8  24.6  25.7  23.3  22.0  21.2  21.2  20.4  20.5  22.2  25.1  27.1 |   23.3
                    |                                                                         |
Maximum Daily Avg   |  23.8  22.9  25.7  19.7  14.5  14.1  16.6  15.0  14.6  24.1  24.4  34.5 |   34.5
                    |                                                                         |
Maximum 2-Minute Avg|    48    44    47    37    30    32    26    29    36    40    45    48 |     48
                    |                                                                         |
Date of Max 2min-Day|    16    23    02    03    14    29    05    19    16    18    28    14 |
               -Year|  2000  1999  1999  1999  2001  2003  2001  2008  1997  2007  2001  2006 |
                    |                                                                         |
Maximum Peak Gust   |    66    64    66    46    43    45    38    40    53    60    67    77 |     77
                    |                                                                         |
Date of Max Gust-Day|    16    23    02    03    28    29    27    19    16    18    15    02 |
               -Year|  2000  1999  1999  1999  2002  2003  2006  2008  1997  2007  2006  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  11.7   8.6   9.0   4.9   2.7   1.4   1.3   1.2   1.9   6.0   9.9  12.0 |   70.6
   Peak Gust >=40   |   5.6   2.8   2.5   0.7   0.1   0.2   0.0   0.1   0.2   1.8   4.6   5.7 |   24.4
   Peak Gust >=50   |   1.7   0.8   0.8   0.0   0.0   0.0   0.0   0.0   0.1   0.3   1.2   1.6 |    6.5
                    |                                                                         |
   Max 2-Minute >=30|   5.1   2.5   2.6   0.7   0.1   0.2   0.0   0.0   0.2   1.6   3.9   0.0 |   16.7
   Max 2-Minute >=40|   0.8   0.3   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.6   0.0 |    2.0
                    |                                                                         |
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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.