STATION:  ROSEBURG REGIONAL AIRPORT (KRBG), OR

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1997 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        |  49.6  53.1  58.0  62.6  69.5  76.4  85.5  85.3  79.8  66.1  53.9  48.1 |   65.7
Avg Min Temp        |  36.7  36.8  38.8  41.5  47.1  52.0  56.9  56.4  51.3  44.7  40.8  36.9 |   45.0
Avg Temperature     |  43.2  45.0  48.4  52.1  58.3  64.2  71.2  70.8  65.6  55.4  47.3  42.5 |   55.3
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    70    70    82    92   105   102   107   107   103    95    76    65 |    107
                    |                                                                         |
    Date of Ext-Day |    18    22    30    29    16    28    27    13    02    01    05    12 |
               -Year|  2005  2002  2003  1998  2008  2003  1998  2002  2003  2001  2002  1998 |
                    |                                                                         |
    Extreme Min Temp|     1    20    26    28    33    38    46    46    38    21    20     9 |      1
                    |                                                                         |
    Date of Ext-Day |    13    19    01    01    08    07    05    31    27    31    01    21 |
               -Year|  2007  2006  2002  2008  2002  1999  1999  1999  1999  2002  2002  1998 |
                    |                                                                         |
Heating Degree Days |   677   565   513   390   228    85     8     5    57   301   530   696 |   4055
Cooling Degree Days |     0     0     0     2    21    62   201   186    73     4     0     0 |    549
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.2   1.4   2.3   8.7  10.3   4.4   0.1   0.0   0.0 |   27.2
    Max Temp >= 75  |   0.0   0.0   0.5   3.7   9.4  16.8  28.7  28.2  21.5   5.3   0.1   0.0 |  114.4
    Max Temp <= 32  |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4 |    0.4
                    |                                                                         |
    Min Temp <= 32  |   7.9   6.1   3.7   0.5   0.0   0.0   0.0   0.0   0.0   0.5   2.5   6.0 |   27.1
    Min Temp <= 20  |   0.2   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.4 |    0.9
    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  |  38.8  38.1  39.5  41.3  45.3  49.0  52.7  52.5  48.7  45.5  42.6  38.6 |   44.4
Avg Wet Bulb Temp   |  40.8  41.3  43.7  46.3  51.1  55.4  60.0  59.6  55.6  49.4  44.7  40.5 |   49.1
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.13 30.12 30.10 30.07 30.06 30.04 30.02 30.01 30.00 30.10 30.13 30.19 |  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   |   0.0   0.1   0.1   0.6   0.5   0.2   0.8   0.2   0.2   0.2   0.1   0.1 |    3.0
    Heavy Fog       |  10.5   7.4   4.5   1.2   0.6   0.2   0.1   0.0   1.1   5.4   7.4   8.9 |   47.2
    Fog             |  25.5  20.5  18.1  13.1  10.8   4.4   1.9   2.3   6.1  16.8  22.6  23.8 |  165.8
    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     |  5.74  3.48  2.96  2.44  2.26  0.57  0.11  0.24  0.68  2.17  5.17  6.40 |  32.25
                    |                                                                         |
Maximum Daily       |  2.20  1.83  1.14  1.83  1.90  0.60  0.34  0.96  0.72  1.06  2.60  2.86 |   2.86
                    |                                                                         |
    Date of Ext-Day |    17    27    28    13    09    08    18    19    09    09    21    13 |
               -Year|  2006  2006  2005  2000  2005  2004  2007  2007  2003  2000  1998  2003 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  21.1  18.0  16.9  14.7  12.1   6.0   1.2   1.5   4.8  12.7  20.3  21.0 |  150.3
    >= 0.10         |  12.5   9.2   9.2   6.9   5.9   1.8   0.4   0.6   2.1   5.8  10.9  12.1 |   77.4
    >= 0.25         |   7.7   4.5   4.5   3.2   2.8   0.6   0.1   0.4   1.2   3.0   7.2   8.1 |   43.3
    >= 0.50         |   3.8   1.5   1.5   0.9   1.2   0.2   0.0   0.1   0.2   1.3   3.4   4.0 |   18.0
    >= 1.00         |   1.0   0.5   0.1   0.3   0.2   0.0   0.0   0.0   0.0   0.3   0.8   1.5 |    4.6
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   2.3   2.6   3.0   3.4   3.9   4.8   5.0   4.4   3.4   2.4   2.2   2.5 |    3.3
Daily Avg Max 2-Min |  10.4  11.4  12.6  13.7  13.6  14.7  15.0  14.8  13.6  11.1  10.1  10.7 |   12.6
Daily Avg Peak Gust |  13.6  15.0  16.7  17.9  17.6  18.9  19.4  19.2  17.5  14.3  13.0  13.9 |   16.4
                    |                                                                         |
Maximum Daily Avg   |   9.7  14.0  10.9  10.8  10.2  11.3   9.3   9.9   9.1  11.2  13.8  12.7 |   14.0
                    |                                                                         |
Maximum 2-Minute Avg|    29    28    26    23    22    25    24    22    25    28    30    26 |     30
                    |                                                                         |
Date of Max 2min-Day|    30    06    02    01    29    16    07    07    05    09    19    02 |
               -Year|  2004  1998  1999  2003  1999  2000  2008  1997  2008  1997  2001  2007 |
                    |                                                                         |
Maximum Peak Gust   |    43    40    45    30    32    31    30    31    33    38    43    41 |     45
                    |                                                                         |
Date of Max Gust-Day|    16    25    27    23    02    16    24    30    05    09    19    02 |
               -Year|  2000  2004  2006  2008  2007  2000  2006  2008  2008  1997  2001  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   0.9   1.5   1.4   0.1   0.1   0.2   0.2   0.1   0.1   0.3   0.9   1.4 |    7.1
   Peak Gust >=40   |   0.1   0.1   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.2 |    0.6
   Peak Gust >=50   |   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
                    |                                                                         |
   Max 2-Minute >=30|   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
   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.