STATION:  PULLMAN/MOSCOW RGNL ARPT (KPUW), WA

CLIMATOLOGICAL SUMMARY.  Period of Record: Jun 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        |  37.2  41.2  49.0  56.1  64.4  71.5  83.7  82.9  73.6  59.3  45.0  36.3 |   58.3
Avg Min Temp        |  26.8  27.9  32.3  35.4  41.6  45.9  49.8  48.8  43.2  35.8  31.5  25.9 |   37.1
Avg Temperature     |  32.0  34.6  40.6  45.8  53.0  58.7  66.8  65.8  58.4  47.5  38.3  31.1 |   47.7
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    56    60    73    77    92    95   101   102    96    87    72    56 |    102
                    |                                                                         |
    Date of Ext-Day |    26    27    20    29    16    29    23    17    01    01    12    04 |
               -Year|  2003  2005  1999  2006  2006  2008  2006  2008  1998  2008  1999  2007 |
                    |                                                                         |
    Extreme Min Temp|   -17     4    15    22    26    30    33    34    21     8    -2    -6 |    -17
                    |                                                                         |
    Date of Ext-Day |    05    18    07    24    10    07    11    21    23    31    28    22 |
               -Year|  2004  2006  2002  2002  1999  2002  2008  2000  2000  2002  2006  2008 |
                    |                                                                         |
Heating Degree Days |  1024   859   755   577   380   207    51    67   220   542   802  1052 |   6536
Cooling Degree Days |     0     0     0     0     8    18   105    93    22     1     0     0 |    246
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.5   0.9   8.0   8.4   1.7   0.0   0.0   0.0 |   19.5
    Max Temp >= 75  |   0.0   0.0   0.0   0.6   4.6  10.7  26.7  25.3  14.4   1.6   0.0   0.0 |   83.8
    Max Temp <= 32  |   7.8   2.6   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.1   2.4   9.1 |   22.3
                    |                                                                         |
    Min Temp <= 32  |  22.5  21.5  16.5  10.1   3.4   0.1   0.0   0.0   1.6   9.7  15.0  24.9 |  125.3
    Min Temp <= 20  |   5.5   4.1   0.6   0.0   0.0   0.0   0.0   0.0   0.0   1.2   3.2   6.4 |   21.0
    Min Temp  <= 0  |   0.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.8 |    1.6
                    |                                                                         |
Avg Dew Point Temp  |  27.0  27.2  30.6  33.2  39.2  44.9  45.4  41.7  37.6  34.5  31.4  26.4 |   34.9
Avg Wet Bulb Temp   |  30.2  31.6  36.1  40.2  46.4  51.6  55.3  53.4  47.9  41.4  35.3  29.5 |   41.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.17 30.14 30.08 30.03 30.02 29.99 29.98 29.98 30.01 30.10 30.16 30.20 |  30.07
(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   |   0.1   0.1   0.1   0.5   1.5   1.7   1.4   1.9   0.8   0.4   0.2   0.0 |    8.6
    Heavy Fog       |   6.2   3.9   1.8   0.8   0.7   0.1   0.0   0.0   0.4   1.1   3.5   6.3 |   24.7
    Fog             |  18.9  12.8  11.4   8.4   7.6   4.2   1.3   1.5   2.6   8.1  13.5  17.4 |  107.6
    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     |  1.72  1.21  1.62  0.99  1.16  0.90  0.24  0.51  0.62  1.05  2.06  1.78 |  13.87
                    |                                                                         |
Maximum Daily       |  0.87  0.50  0.91  0.54  0.62  0.99  0.46  0.94  0.88  0.55  1.57  0.83 |   1.57
                    |                                                                         |
    Date of Ext-Day |    31    28    24    09    22    27    09    20    19    15    12    13 |
               -Year|  2003  2006  2002  2007  2006  2001  1998  2008  1998  2006  2008  2003 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  14.0  11.4  13.0   9.5  11.3   6.6   2.3   3.5   4.3   8.0  12.5  13.5 |  109.8
    >= 0.10         |   5.2   4.4   5.4   3.5   4.1   3.1   0.9   1.5   1.9   3.4   6.7   6.1 |   46.2
    >= 0.25         |   1.6   1.6   1.8   1.3   1.0   1.0   0.3   0.6   0.8   1.7   2.2   1.9 |   15.9
    >= 0.50         |   0.7   0.1   0.4   0.1   0.1   0.3   0.0   0.2   0.2   0.3   0.9   0.5 |    3.7
    >= 1.00         |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0 |    0.1
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   9.6   9.1   9.2   8.3   7.5   6.2   5.0   5.3   5.8   6.8   8.9   9.8 |    7.6
Daily Avg Max 2-Min |  19.7  19.6  20.7  20.1  19.3  17.2  16.2  16.8  16.8  18.1  19.6  20.6 |   18.7
Daily Avg Peak Gust |  24.0  23.7  25.4  24.8  24.0  21.8  20.9  21.6  20.9  21.9  24.0  25.1 |   23.2
                    |                                                                         |
Maximum Daily Avg   |  26.5  28.3  22.9  20.0  19.9  17.4  16.6  15.3  25.0  25.3  21.8  26.6 |   28.3
                    |                                                                         |
Maximum 2-Minute Avg|    46    45    43    40    38    37    41    43    40    47    48    54 |     54
                    |                                                                         |
Date of Max 2min-Day|    30    07    03    27    06    01    29    18    25    28    13    15 |
               -Year|  2004  2008  1999  2004  1999  2001  1998  2008  1999  2003  2006  2000 |
                    |                                                                         |
Maximum Peak Gust   |    58    58    53    51    49    47    48    59    49    58    63    63 |     63
                    |                                                                         |
Date of Max Gust-Day|    30    07    08    27    08    01    29    05    25    28    13    15 |
               -Year|  2004  2008  2006  2004  2007  2001  1998  2008  1999  2003  2006  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   7.8   6.2   9.3   7.5   6.4   4.8   4.2   3.5   3.1   4.6   7.8   8.8 |   74.0
   Peak Gust >=40   |   2.0   1.7   1.7   1.2   1.2   0.4   0.7   0.6   0.1   0.7   2.2   2.4 |   15.0
   Peak Gust >=50   |   0.5   0.6   0.5   0.1   0.0   0.0   0.0   0.3   0.0   0.1   0.2   0.8 |    3.1
                    |                                                                         |
   Max 2-Minute >=30|   2.3   2.7   3.5   1.9   2.1   0.8   1.2   0.9   0.5   1.1   2.9   0.0 |   20.1
   Max 2-Minute >=40|   0.4   0.6   0.3   0.1   0.0   0.0   0.2   0.1   0.1   0.1   0.2   0.0 |    2.1
                    |                                                                         |
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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.