STATION:  REDDING MUNICIPAL AIRPORT (KRDD), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1996 to Dec 2008

Summaries based on unedited daily ASOS data.  Errors may be present.

-----------------------------------------------------------------------------------------------

TEMPERATURE (F)     |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Avg Max Temp        |  54.7  58.8  65.6  70.1  81.1  90.7  99.0  97.0  90.5  77.7  62.8  55.2 |   75.3
Avg Min Temp        |  37.4  39.6  42.7  46.0  54.2  61.5  65.9  63.1  57.7  49.0  41.9  37.3 |   49.7
Avg Temperature     |  46.0  49.2  54.2  58.1  67.7  76.1  82.4  80.0  74.1  63.3  52.3  46.3 |   62.5
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    75    80    88    95   106   117   116   113   112   104    85    78 |    117
                    |                                                                         |
    Date of Ext-Day |    02    08    31    26    17    25    29    05    02    01    07    16 |
               -Year|  1999  2006  2002  2004  2008  2006  2003  1998  1998  2001  2007  1998 |
                    |                                                                         |
    Extreme Min Temp|    19    23    28    28    34    44    53    54    40    35    27    21 |     19
                    |                                                                         |
    Date of Ext-Day |    14    16    05    09    11    04    08    22    30    26    11    23 |
               -Year|  1997  2006  1997  1999  2000  1999  2000  1998  2007  1997  2000  1998 |
                    |                                                                         |
Heating Degree Days |   588   447   343   229    68     7     0     0     6   115   381   581 |   2765
Cooling Degree Days |     0     0     7    21   150   340   541   464   278    63     1     0 |   1866
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.7   7.7  17.7  28.5  25.9  17.3   3.6   0.0   0.0 |  101.4
    Max Temp >= 75  |   0.2   1.3   6.5  10.1  22.2  28.2  31.0  30.9  28.7  20.0   4.1   0.2 |  183.3
    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   0.0 |    0.0
                    |                                                                         |
    Min Temp <= 32  |   8.5   3.5   1.9   0.5   0.0   0.0   0.0   0.0   0.0   0.0   2.8   9.3 |   26.6
    Min Temp <= 20  |   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.2
    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  |  36.7  37.3  38.6  40.5  44.8  46.9  51.4  48.7  44.8  40.5  41.0  36.5 |   42.3
Avg Wet Bulb Temp   |  41.8  43.8  46.9  49.5  55.7  60.0  64.1  62.0  58.0  51.7  45.6  41.9 |   51.7
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
Avg Sea Level Pres  | 30.14 30.09 30.04 29.99 29.92 29.86 29.85 29.86 29.87 29.98 30.10 30.16 |  29.99
(Inches of Mercury) |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
WEATHER             |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
See disclaimer below|                                                                         |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Thunderstorms   |   0.5   0.3   0.3   0.7   0.8   0.8   0.5   0.5   0.5   0.2   0.5   0.2 |    5.8
    Heavy Fog       |   6.1   1.4   0.5   0.4   0.1   0.0   0.0   0.0   0.0   0.3   3.1   3.6 |   15.5
    Fog             |  20.9  14.0   9.6   7.6   5.0   1.8   0.1   0.4   1.4   3.6  15.9  18.8 |   99.1
    Hail            |   0.0   0.1   0.0   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.2
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  5.93  6.24  3.26  2.53  1.84  0.53  0.14  0.12  0.52  1.78  4.37  6.96 |  34.23
                    |                                                                         |
Maximum Daily       |  2.27  3.17  2.39  1.65  1.48  1.27  1.09  0.61  2.77  3.30  2.26  3.44 |   3.44
                    |                                                                         |
    Date of Ext-Day |    01    22    05    29    28    03    18    02    01    19    26    27 |
               -Year|  2006  2001  2006  2003  1998  1997  2007  2003  2000  2004  1997  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  14.2  12.5  10.8   8.9   6.9   2.6   1.1   0.7   1.9   5.1  11.3  13.3 |   89.3
    >= 0.10         |   9.9   8.5   6.8   5.6   4.2   1.4   0.2   0.3   0.6   3.0   7.2   9.9 |   57.7
    >= 0.25         |   6.8   6.4   3.8   3.3   2.9   0.8   0.2   0.2   0.4   1.8   5.2   7.7 |   39.3
    >= 0.50         |   4.5   4.7   1.8   1.5   1.1   0.3   0.1   0.1   0.2   0.9   3.1   4.8 |   23.0
    >= 1.00         |   1.9   2.0   0.8   0.6   0.3   0.1   0.1   0.0   0.2   0.4   1.4   2.1 |    9.8
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   5.3   6.6   6.1   6.6   6.4   6.6   5.5   5.2   5.4   5.4   4.8   6.0 |    5.8
Daily Avg Max 2-Min |  15.1  17.5  16.9  17.5  16.6  16.8  15.7  15.8  15.9  15.5  14.4  16.7 |   16.2
Daily Avg Peak Gust |  18.4  21.6  21.1  22.1  20.9  21.3  19.3  19.7  19.7  19.3  17.6  20.6 |   20.1
                    |                                                                         |
Maximum Daily Avg   |  25.1  28.3  21.2  19.0  17.2  18.7  11.5  15.5  18.5  20.7  30.0  31.0 |   31.0
                    |                                                                         |
Maximum 2-Minute Avg|    55    49    44    39    36    33    32    31    35    40    51    58 |     58
                    |                                                                         |
Date of Max 2min-Day|    04    06    15    07    20    16    10    28    22    17    23    15 |
               -Year|  2008  1999  2003  1999  2002  2000  2007  2008  2006  2004  1998  2002 |
                    |                                                                         |
Maximum Peak Gust   |    70    87    55    48    43    44    43    44    43    51    63    71 |     87
                    |                                                                         |
Date of Max Gust-Day|    04    10    30    15    20    16    10    23    22    17    23    15 |
               -Year|  2008  2005  1999  2006  2002  2000  2007  1999  2006  2004  1998  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   5.0   6.6   4.9   5.6   3.5   2.6   0.5   1.2   3.2   4.1   3.9   7.6 |   48.6
   Peak Gust >=40   |   2.3   2.5   1.4   1.2   0.1   0.1   0.1   0.2   0.1   0.8   1.3   3.1 |   13.1
   Peak Gust >=50   |   0.4   0.9   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.5   0.9 |    3.1
                    |                                                                         |
   Max 2-Minute >=30|   2.7   3.3   1.9   1.9   0.6   0.4   0.1   0.2   0.2   1.4   2.1   0.0 |   14.7
   Max 2-Minute >=40|   0.5   1.1   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.6   0.0 |    2.4
                    |                                                                         |
------------------------------------------------------------------------------------------------------

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.