STATION:  PENDLETON AIRPORT (KPDT), 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        |  41.8  47.3  55.3  61.4  70.4  78.7  89.9  87.8  77.8  63.6  49.3  41.1 |   63.7
Avg Min Temp        |  29.2  30.7  34.8  38.0  45.3  51.0  57.4  56.4  48.9  39.4  33.5  28.6 |   41.1
Avg Temperature     |  35.5  39.0  45.1  49.7  57.8  64.8  73.7  72.1  63.4  51.5  41.4  34.9 |   52.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    65    68    80    87    97   102   109   110   100    91    80    66 |    110
                    |                                                                         |
    Date of Ext-Day |    01    22    29    30    17    29    12    04    01    01    12    10 |
               -Year|  1997  2002  2004  1998  2008  2008  2002  1998  1998  2008  1999  2004 |
                    |                                                                         |
    Extreme Min Temp|   -11     6    21    22    27    36    42    42    30    14    13   -10 |    -11
                    |                                                                         |
    Date of Ext-Day |    05    18    02    03    02    07    11    31    23    31    05    16 |
               -Year|  2004  2006  2002  2007  2006  2002  2008  2006  2000  2002  2003  2008 |
                    |                                                                         |
Heating Degree Days |   915   734   617   460   243    81     7     9   107   420   708   935 |   5237
Cooling Degree Days |     0     0     0     0    21    76   275   230    59     2     1     0 |    664
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.9   4.5  17.2  13.7   2.4   0.2   0.0   0.0 |   38.9
    Max Temp >= 75  |   0.0   0.0   0.3   2.3  10.1  20.1  29.8  29.5  18.6   3.1   0.1   0.0 |  113.9
    Max Temp <= 32  |   6.2   1.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.0   6.9 |   15.2
                    |                                                                         |
    Min Temp <= 32  |  19.8  17.6  11.5   5.3   1.1   0.0   0.0   0.0   0.1   5.0  13.8  21.3 |   95.5
    Min Temp <= 20  |   4.0   1.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3   1.3   4.3 |   11.4
    Min Temp  <= 0  |   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3 |    0.6
                    |                                                                         |
Avg Dew Point Temp  |  29.1  30.4  33.2  36.5  41.9  44.1  44.9  44.4  40.8  37.1  33.9  28.7 |   37.1
Avg Wet Bulb Temp   |  32.7  35.2  39.8  43.7  49.7  53.9  58.0  57.1  51.7  44.4  37.5  32.2 |   44.7
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.13 30.12 30.05 29.99 29.97 29.93 29.92 29.92 29.95 30.06 30.13 30.19 |  30.03
(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   |   0.2   0.3   0.3   1.2   1.7   1.8   1.8   1.5   1.0   0.2   0.3   0.2 |   10.5
    Heavy Fog       |   7.5   4.6   0.8   0.4   0.3   0.0   0.1   0.0   0.2   0.6   5.4   6.9 |   26.7
    Fog             |  16.9  10.1   6.7   5.0   4.7   3.4   1.0   0.7   1.8   5.3  13.3  16.4 |   85.3
    Hail            |   0.2   0.2   0.2   0.3   0.3   0.2   0.1   0.0   0.0   0.1   0.0   0.1 |    1.6
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  1.48  1.01  1.21  1.12  1.15  0.93  0.24  0.27  0.54  1.04  1.37  1.50 |  11.86
                    |                                                                         |
Maximum Daily       |  0.83  0.94  0.68  0.70  0.58  0.97  0.52  0.35  0.78  0.93  1.07  0.80 |   1.07
                    |                                                                         |
    Date of Ext-Day |    27    14    25    27    20    04    30    18    30    26    07    30 |
               -Year|  2008  2000  2006  2002  2006  2006  1998  2008  2000  1999  1997  2005 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  13.7   9.1  11.5   9.3   9.4   5.8   2.8   3.2   4.0   7.4  11.4  12.9 |  100.5
    >= 0.10         |   4.9   3.7   4.1   4.2   3.6   2.6   0.7   0.9   1.6   3.1   4.2   5.3 |   38.9
    >= 0.25         |   1.6   0.9   1.5   1.2   1.6   1.2   0.2   0.3   0.7   1.5   1.5   1.7 |   14.1
    >= 0.50         |   0.5   0.2   0.3   0.1   0.1   0.3   0.1   0.0   0.2   0.4   0.3   0.3 |    2.7
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.0 |    0.2
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   7.6   8.0   9.5   9.2   9.3   9.6   8.8   8.8   8.2   7.9   7.3   7.6 |    8.5
Daily Avg Max 2-Min |  18.9  19.2  22.1  21.4  21.6  21.8  20.4  20.4  18.5  18.9  18.3  18.9 |   20.0
Daily Avg Peak Gust |  22.2  22.5  26.1  25.6  26.3  27.0  25.3  25.2  22.4  22.4  21.7  22.5 |   24.1
                    |                                                                         |
Maximum Daily Avg   |  23.1  25.4  22.7  24.1  24.8  28.2  23.2  22.1  25.4  28.0  24.1  27.2 |   28.2
                    |                                                                         |
Maximum 2-Minute Avg|    53    52    55    48    43    47    49    43    45    45    44    54 |     55
                    |                                                                         |
Date of Max 2min-Day|    30    07    30    03    02    30    23    24    25    28    19    27 |
               -Year|  2004  2002  1997  1997  2002  2008  2002  1997  1999  2003  2003  1998 |
                    |                                                                         |
Maximum Peak Gust   |    64    61    78    55    58    62    56    59    53    53    56    66 |     78
                    |                                                                         |
Date of Max Gust-Day|    30    07    26    23    29    30    23    24    25    28    12    27 |
               -Year|  2004  2002  2008  1998  2007  2008  2002  1997  1999  2003  2007  1998 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   7.9   7.0  11.5   9.4  10.9  11.2   8.0   8.1   6.1   7.4   7.7   8.4 |  103.6
   Peak Gust >=40   |   2.3   2.3   3.2   2.4   2.7   1.6   0.8   1.3   1.2   1.6   2.4   3.4 |   25.1
   Peak Gust >=50   |   0.8   0.6   0.5   0.4   0.2   0.3   0.1   0.1   0.1   0.3   0.2   0.9 |    4.5
                    |                                                                         |
   Max 2-Minute >=30|   4.5   3.6   6.4   4.7   5.4   4.1   2.7   3.5   2.6   3.3   4.6   0.0 |   45.5
   Max 2-Minute >=40|   1.1   1.0   0.9   0.5   0.1   0.3   0.2   0.2   0.2   0.6   0.5   0.0 |    5.7
                    |                                                                         |
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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.