STATION:  SCAPPOOSE INDUS AIRPK ARPT (KSPB), OR

CLIMATOLOGICAL SUMMARY.  Period of Record: Aug 1998 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        |  46.2  51.2  55.3  60.4  66.9  72.4  80.4  80.8  75.9  63.0  52.4  45.6 |   62.5
Avg Min Temp        |  33.5  33.5  36.7  39.2  45.1  50.1  53.9  53.8  48.5  42.1  36.7  33.8 |   42.2
Avg Temperature     |  39.8  42.3  46.0  49.8  56.0  61.3  67.1  67.3  62.2  52.5  44.5  39.7 |   52.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    64    67    76    85    96   100   106   102    97    83    68    64 |    106
                    |                                                                         |
    Date of Ext-Day |    18    23    29    26    16    28    21    14    02    21    13    04 |
               -Year|  2005  2005  2004  2004  2008  2008  2006  2008  2006  2003  1999  2007 |
                    |                                                                         |
    Extreme Min Temp|    17    -1    26    28    32    37    44    45    30    19    19     9 |     -1
                    |                                                                         |
    Date of Ext-Day |    15    01    01    01    07    02    03    24    15    31    01    22 |
               -Year|  2007  2007  2002  2007  2002  1999  1999  1998  2008  2002  2002  1998 |
                    |                                                                         |
Heating Degree Days |   781   640   590   455   288   147    35    30   121   387   614   784 |   4873
Cooling Degree Days |     0     0     0     0     9    35   102   101    33     1     0     0 |    281
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.7   1.6   4.6   4.0   1.7   0.0   0.0   0.0 |   12.6
    Max Temp >= 75  |   0.0   0.0   0.3   1.9   5.5  10.2  23.8  23.7  15.7   2.5   0.0   0.0 |   83.6
    Max Temp <= 32  |   0.6   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.1 |    1.7
                    |                                                                         |
    Min Temp <= 32  |  12.9  12.7   6.7   3.2   0.3   0.0   0.0   0.0   0.1   2.0   9.4  12.2 |   59.6
    Min Temp <= 20  |   0.9   0.5   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.2   1.1 |    2.8
    Min Temp  <= 0  |   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
Avg Dew Point Temp  |  36.1  35.9  39.2  41.1  45.8  49.5  52.9  53.2  49.5  45.8  39.2  36.0 |   43.7
Avg Wet Bulb Temp   |  38.1  39.3  42.7  45.7  50.8  54.9  58.9  58.8  54.5  48.9  41.6  38.0 |   47.7
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.12 30.13 30.10 30.05 30.07 30.04 30.03 30.01 30.01 30.09 30.13 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   |   0.2   0.1   0.7   0.5   0.7   0.7   0.3   0.4   0.5   0.5   0.3   0.1 |    5.0
    Heavy Fog       |   8.8   3.5   2.4   1.1   0.5   0.1   0.4   0.4   2.4   6.8   6.4   5.9 |   38.8
    Fog             |  26.3  22.3  22.9  15.4  10.6   7.4   3.7   5.1   9.8  19.6  22.2  24.1 |  189.4
    Hail            |   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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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  6.77  4.30  4.05  2.66  2.10  1.21  0.36  0.72  1.05  2.76  5.75  7.55 |  39.27
                    |                                                                         |
Maximum Daily       |  1.89  1.96  1.74  1.35  1.04  0.76  0.28  0.78  1.04  1.26  2.34  3.17 |   3.17
                    |                                                                         |
    Date of Ext-Day |    29    27    27    12    09    28    22    22    30    27    06    02 |
               -Year|  2006  1999  2005  2003  2005  2002  2005  2004  2005  1999  2006  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  20.9  16.6  19.9  16.8  13.5  10.4   4.1   4.8   7.7  15.3  18.5  20.6 |  169.1
    >= 0.10         |  14.7  10.1  10.6   9.0   6.7   4.0   1.4   2.2   2.8   7.4  11.4  15.3 |   95.7
    >= 0.25         |   9.1   5.9   5.2   3.2   3.1   1.4   0.3   1.1   1.4   4.1   7.2   9.7 |   51.7
    >= 0.50         |   4.9   2.7   2.5   1.3   0.7   0.2   0.0   0.4   0.4   1.1   4.2   4.8 |   23.2
    >= 1.00         |   1.2   0.6   0.3   0.1   0.1   0.0   0.0   0.0   0.1   0.4   1.1   1.4 |    5.2
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   3.3   3.5   4.0   4.4   4.5   5.1   6.1   5.6   4.6   3.1   3.0   3.5 |    4.2
Daily Avg Max 2-Min |  10.9  11.9  13.4  13.9  13.5  14.0  14.7  14.1  13.2  11.2  10.7  11.4 |   12.8
Daily Avg Peak Gust |  14.4  15.7  17.6  18.2  17.8  18.2  19.0  18.3  17.3  14.5  14.1  15.0 |   16.7
                    |                                                                         |
Maximum Daily Avg   |  10.3  10.7  11.2   9.8  11.5  11.3  11.9  12.2  11.2  10.2  11.7  12.6 |   12.6
                    |                                                                         |
Maximum 2-Minute Avg|    29    33    29    28    24    23    21    28    32    29    23    36 |     36
                    |                                                                         |
Date of Max 2min-Day|    16    06    02    01    05    09    12    23    28    18    16    16 |
               -Year|  2000  1999  2006  2003  2000  2008  2003  2008  2008  2007  2003  2006 |
                    |                                                                         |
Maximum Peak Gust   |    44    45    40    33    33    35    31    35    62    38    40    52 |     62
                    |                                                                         |
Date of Max Gust-Day|    04    06    02    01    15    09    12    23    28    18    12    16 |
               -Year|  2008  1999  2006  2003  2007  2008  2003  2008  2008  2007  2007  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   0.7   1.7   1.5   0.6   0.3   0.2   0.1   0.1   0.4   0.3   0.5   1.3 |    7.6
   Peak Gust >=40   |   0.2   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.1   0.2 |    0.8
   Peak Gust >=50   |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.1 |    0.2
                    |                                                                         |
   Max 2-Minute >=30|   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0 |    0.2
   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.