STATION:  OROVILLE MUNICIPAL AIRPORT (KOVE), CA

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        |  53.8  59.2  66.2  71.2  81.6  89.4  95.4  93.5  87.5  77.1  62.7  54.6 |   74.3
Avg Min Temp        |  38.9  41.6  44.4  47.3  55.0  60.7  64.8  62.8  58.5  50.9  44.0  39.1 |   50.7
Avg Temperature     |  46.3  50.4  55.3  59.2  68.3  75.1  80.1  78.2  73.0  64.0  53.3  46.8 |   62.5
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    71    75    83    95   103   105   113   108   102   101    79    75 |    113
                    |                                                                         |
    Date of Ext-Day |    05    27    30    26    31    14    23    05    02    02    01    21 |
               -Year|  2003  2002  2002  2004  2001  2000  2006  1998  1998  2001  2007  1999 |
                    |                                                                         |
    Extreme Min Temp|    25    29    31    33    39    47    54    53    43    35    24    23 |     23
                    |                                                                         |
    Date of Ext-Day |    14    11    08    09    11    03    04    21    29    31    04    22 |
               -Year|  2007  1999  2002  1999  2000  1999  1999  2001  2007  2002  2007  1998 |
                    |                                                                         |
Heating Degree Days |   579   413   304   196    44     5     0     0     6    87   350   564 |   2547
Cooling Degree Days |     0     0     3    22   145   307   468   408   246    55     0     0 |   1655
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.6   6.6  16.2  26.1  23.3  13.6   1.7   0.0   0.0 |   88.1
    Max Temp >= 75  |   0.0   0.2   5.7  10.4  24.0  28.8  31.0  30.9  28.3  19.6   2.1   0.1 |  180.9
    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  |   5.1   1.7   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   1.2   4.0 |   12.2
    Min Temp <= 20  |   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  <= 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  41.6  42.3  43.1  48.3  51.2  54.9  51.9  49.5  44.2  44.5  40.3 |   45.9
Avg Wet Bulb Temp   |  42.2  46.1  48.9  51.1  57.5  61.4  64.6  61.8  59.5  53.5  48.7  43.8 |   53.3
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.18 30.09 30.07 30.01 29.94 29.89 29.88 29.89 29.89 29.99 30.12 30.17 |  30.01
(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   0.5   0.9   0.8   0.3   0.3   0.2   0.2   0.4   0.3   0.1   0.3 |    4.4
    Heavy Fog       |   6.9   0.7   0.3   0.2   0.0   0.0   0.0   0.0   0.0   0.4   3.2   4.9 |   16.6
    Fog             |  21.4  13.7   8.2   5.8   1.9   1.0   0.1   0.8   1.1   4.9  16.2  20.7 |   95.9
    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     |  3.66  4.91  2.52  1.93  0.74  0.23  0.04  0.09  0.15  1.43  2.83  5.02 |  23.55
                    |                                                                         |
Maximum Daily       |  1.36  2.92  1.67  1.23  1.19  0.72  0.43  0.58  0.43  1.89  1.87  2.15 |   2.92
                    |                                                                         |
    Date of Ext-Day |    08    27    14    12    18    16    18    02    24    10    07    31 |
               -Year|  2001  2006  2003  2003  2005  2005  2007  2003  2001  2000  2002  2005 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  14.1  11.8   9.1   7.3   3.9   1.4   0.2   0.6   1.2   4.6  12.4  13.6 |   80.2
    >= 0.10         |   7.0   8.1   5.3   4.5   2.0   0.7   0.1   0.3   0.5   2.5   5.2   8.3 |   44.4
    >= 0.25         |   4.7   6.4   3.7   3.0   0.7   0.4   0.1   0.1   0.2   1.6   3.7   6.7 |   31.3
    >= 0.50         |   3.5   3.4   1.7   1.2   0.4   0.2   0.0   0.1   0.0   0.9   2.1   4.4 |   17.8
    >= 1.00         |   0.6   1.3   0.4   0.2   0.2   0.0   0.0   0.0   0.0   0.5   0.5   1.2 |    4.8
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   5.6   6.8   6.8   7.2   6.9   6.6   5.9   5.5   5.3   5.3   5.2   6.4 |    6.1
Daily Avg Max 2-Min |  14.5  16.3  15.9  16.5  15.9  14.8  13.4  12.7  13.0  13.3  13.7  16.1 |   14.7
Daily Avg Peak Gust |  18.0  20.2  20.1  20.9  20.6  18.9  16.9  15.9  16.4  17.0  17.2  20.1 |   18.5
                    |                                                                         |
Maximum Daily Avg   |  19.4  21.8  18.0  17.4  18.4  16.5  15.1  16.1  16.4  16.8  21.8  25.5 |   25.5
                    |                                                                         |
Maximum 2-Minute Avg|    48    43    39    32    33    29    24    28    29    31    47    46 |     48
                    |                                                                         |
Date of Max 2min-Day|    04    25    04    07    08    02    03    05    08    19    24    19 |
               -Year|  2008  2004  2001  1999  2005  1999  1999  2007  1998  2004  2001  2002 |
                    |                                                                         |
Maximum Peak Gust   |    63    52    52    39    44    43    29    33    36    41    61    59 |     63
                    |                                                                         |
Date of Max Gust-Day|    04    25    04    07    08    10    02    05    28    19    24    19 |
               -Year|  2008  2004  2001  1999  2005  2008  1999  2007  2007  2004  2001  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   4.2   5.0   3.5   3.8   3.0   1.7   0.0   0.2   1.0   2.0   2.6   5.7 |   32.8
   Peak Gust >=40   |   0.7   1.0   0.3   0.0   0.1   0.1   0.0   0.0   0.0   0.2   0.7   2.0 |    5.1
   Peak Gust >=50   |   0.2   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.2 |    0.8
                    |                                                                         |
   Max 2-Minute >=30|   1.1   2.1   0.5   0.4   0.1   0.0   0.0   0.0   0.0   0.1   1.2   0.0 |    5.5
   Max 2-Minute >=40|   0.2   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.0 |    0.5
                    |                                                                         |
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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.