STATION:  OMAK AIRPORT (KOMK), WA

CLIMATOLOGICAL SUMMARY.  Period of Record: Feb 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        |  32.4  40.8  52.8  62.9  71.5  79.0  90.3  88.8  78.3  61.4  43.5  32.1 |   61.1
Avg Min Temp        |  22.0  24.0  29.3  34.5  42.2  49.1  56.6  55.2  46.1  35.0  27.9  21.6 |   37.0
Avg Temperature     |  27.2  32.4  41.0  48.7  56.9  64.1  73.4  72.0  62.2  48.2  35.7  26.9 |   49.1
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    52    74    75    83    96   103   109   106    99    85    61    56 |    109
                    |                                                                         |
    Date of Ext-Day |    10    28    30    30    23    30    08    04    01    02    12    04 |
               -Year|  2006  2008  2003  1998  2001  2008  2001  1998  1998  2003  1999  2007 |
                    |                                                                         |
    Extreme Min Temp|   -10     4    12    19    22    31    38    38    22     5    -5    -5 |    -10
                    |                                                                         |
    Date of Ext-Day |    24    02    02    24    01    09    03    31    23    31    30    26 |
               -Year|  2008  2008  2007  2002  2008  1999  1999  2006  2000  2002  2006  2008 |
                    |                                                                         |
Heating Degree Days |  1171   921   743   489   265    94    13    15   137   521   878  1182 |   6430
Cooling Degree Days |     0     0     0     0    13    66   273   232    53     1     0     0 |    639
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   1.0   4.4  17.2  15.7   3.0   0.0   0.0   0.0 |   41.2
    Max Temp >= 75  |   0.0   0.0   0.1   2.2  10.4  21.4  30.3  29.3  19.8   1.7   0.0   0.0 |  115.2
    Max Temp <= 32  |  12.7   2.2   0.4   0.0   0.0   0.0   0.0   0.0   0.0   0.0   2.5  14.9 |   32.7
                    |                                                                         |
    Min Temp <= 32  |  28.6  24.9  21.5  12.4   3.2   0.1   0.0   0.0   1.2  12.8  20.8  28.9 |  154.3
    Min Temp <= 20  |  11.5   8.9   2.2   0.2   0.0   0.0   0.0   0.0   0.0   1.2   5.7  11.4 |   41.0
    Min Temp  <= 0  |   1.7   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.7 |    2.5
                    |                                                                         |
Avg Dew Point Temp  |  23.8  25.3  28.5  31.7  38.5  44.0  45.1  43.7  39.4  34.4  30.0  23.7 |   34.0
Avg Wet Bulb Temp   |  26.3  29.7  36.0  41.7  47.8  53.6  58.1  56.4  50.7  42.0  33.6  26.2 |   41.8
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.18 30.14 30.05 30.00 29.96 29.93 29.90 29.91 29.97 30.09 30.17 30.22 |  30.04
(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   0.5   2.1   1.8   1.5   1.2   0.6   0.1   0.2   0.0 |    8.0
    Heavy Fog       |   7.3   4.1   1.3   0.0   0.1   0.1   0.0   0.0   0.0   0.5   2.6   6.2 |   22.1
    Fog             |  21.2  11.8   6.4   2.4   3.6   3.0   1.0   0.9   1.1   4.6  13.5  19.9 |   89.4
    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     |  1.30  0.85  0.74  0.57  0.97  0.94  0.26  0.28  0.27  0.66  1.06  2.06 |   9.95
                    |                                                                         |
Maximum Daily       |  0.84  0.64  0.56  0.83  1.03  1.42  0.65  0.41  0.71  0.72  0.67  1.08 |   1.42
                    |                                                                         |
    Date of Ext-Day |    05    28    09    24    17    05    18    30    30    03    28    14 |
               -Year|  2008  2006  1999  2003  2004  2007  2007  1999  2007  2005  2001  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  10.6   7.7   6.9   5.3   6.7   6.1   2.7   2.6   3.4   4.2   8.4  11.9 |   76.6
    >= 0.10         |   3.8   2.6   2.5   1.8   2.7   2.3   0.6   1.0   0.6   1.8   3.4   6.5 |   29.6
    >= 0.25         |   2.2   1.0   1.0   0.5   1.3   1.2   0.3   0.4   0.2   0.9   1.6   3.1 |   13.7
    >= 0.50         |   0.4   0.2   0.2   0.3   0.5   0.6   0.1   0.0   0.1   0.3   0.2   0.6 |    3.4
    >= 1.00         |   0.0   0.0   0.0   0.0   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.1 |    0.3
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   4.9   5.5   7.0   7.5   7.5   7.6   8.0   7.9   7.7   6.7   5.2   4.5 |    6.7
Daily Avg Max 2-Min |  12.7  13.7  17.1  18.2  18.5  17.8  17.9  17.6  17.2  15.7  13.1  12.2 |   16.0
Daily Avg Peak Gust |  15.2  16.7  21.2  22.8  23.0  22.8  22.7  22.3  21.3  19.2  15.9  14.8 |   19.8
                    |                                                                         |
Maximum Daily Avg   |  20.3  21.3  19.5  17.1  13.7  14.9  16.2  16.3  15.2  16.6  19.6  18.9 |   21.3
                    |                                                                         |
Maximum 2-Minute Avg|    33    31    35    33    44    35    46    44    36    38    36    38 |     46
                    |                                                                         |
Date of Max 2min-Day|    07    15    18    14    23    21    10    16    01    28    28    17 |
               -Year|  2007  2001  2004  2002  2001  2008  2008  2002  2004  2003  2006  1998 |
                    |                                                                         |
Maximum Peak Gust   |    40    52    43    41    53    53    59    55    43    51    45    47 |     59
                    |                                                                         |
Date of Max Gust-Day|    07    08    18    30    23    21    10    16    01    28    28    17 |
               -Year|  2007  2008  2004  2001  2001  2008  2008  2002  2004  2003  2006  1998 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   1.6   2.1   3.8   3.9   3.9   3.5   3.1   3.6   2.7   2.4   1.3   1.6 |   33.6
   Peak Gust >=40   |   0.1   0.1   0.5   0.2   0.1   0.2   0.2   0.5   0.2   0.2   0.3   0.2 |    2.6
   Peak Gust >=50   |   0.0   0.1   0.0   0.0   0.1   0.1   0.1   0.1   0.0   0.1   0.0   0.0 |    0.6
                    |                                                                         |
   Max 2-Minute >=30|   0.2   0.4   1.0   0.8   0.4   0.4   0.4   0.5   0.5   0.3   0.4   0.0 |    5.1
   Max 2-Minute >=40|   0.0   0.0   0.0   0.0   0.1   0.0   0.1   0.1   0.0   0.0   0.0   0.0 |    0.3
                    |                                                                         |
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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.