STATION:  SANDBERG (KSDB), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1996 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        |  49.1  49.2  55.6  57.9  68.9  77.0  85.9  85.8  79.2  68.1  57.1  49.7 |   65.3
Avg Min Temp        |  36.3  36.1  39.3  40.3  48.9  56.0  64.0  63.8  59.1  50.5  42.5  36.1 |   47.8
Avg Temperature     |  42.7  42.6  47.5  49.1  58.9  66.5  74.9  74.8  69.1  59.3  49.8  42.9 |   56.5
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    69    68    80    86    94    96   102   100    95    90    76    82 |    102
                    |                                                                         |
    Date of Ext-Day |    31    10    16    28    31    14    09    06    03    08    04    19 |
               -Year|  2003  2006  2007  2007  2001  2000  2002  1997  2007  1996  1997  2001 |
                    |                                                                         |
    Extreme Min Temp|    14    22    22    23    30    33    47    47    39    31    23    15 |     14
                    |                                                                         |
    Date of Ext-Day |    13    10    12    09    09    03    12    06    20    25    29    21 |
               -Year|  2007  1999  2006  1999  2003  1999  1997  1999  2007  1996  2004  1998 |
                    |                                                                         |
Heating Degree Days |   691   632   545   481   239    86     4     5    57   225   458   685 |   4108
Cooling Degree Days |     0     0     2     5    50   131   310   310   182    48     1     0 |   1039
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.0   0.3   1.2   8.9   9.8   2.9   0.1   0.0   0.0 |   23.3
    Max Temp >= 75  |   0.0   0.0   1.0   2.2  10.6  20.2  30.0  29.6  22.3   9.5   0.6   0.2 |  126.2
    Max Temp <= 32  |   0.8   0.4   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4 |    1.7
                    |                                                                         |
    Min Temp <= 32  |   9.6   8.9   6.6   5.5   0.3   0.0   0.0   0.0   0.0   0.4   3.3  10.2 |   44.8
    Min Temp <= 20  |   0.4   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.3 |    0.7
    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  |  24.6  26.4  30.2  33.1  38.0  39.9  43.3  41.0  37.8  32.1  27.8  23.8 |   33.2
Avg Wet Bulb Temp   |  35.2  35.9  38.8  41.0  47.4  52.1  56.7  55.7  51.8  45.3  39.1  35.0 |   44.5
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.08 30.04 29.99 29.96 29.93 29.90 29.94 29.93 29.90 29.96 30.04 30.09 |  29.98
(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   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Heavy Fog       |  10.4  13.3  11.1  11.2   5.8   3.7   0.5   0.6   2.4   5.6   6.0   8.5 |   79.1
    Fog             |  12.6  15.2  15.7  13.8   8.1   4.4   1.0   1.2   3.5   7.2   9.2   9.9 |  101.8
    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     |  2.31  3.90  1.17  0.98  0.51  0.04  0.16  0.03  0.22  0.79  0.80  1.76 |  12.66
                    |                                                                         |
Maximum Daily       |  2.53  4.27  1.53  1.37  0.98  0.14  0.98  0.09  0.67  2.50  1.54  3.47 |   4.27
                    |                                                                         |
    Date of Ext-Day |    10    12    25    17    05    03    09    15    25    17    26    05 |
               -Year|  2001  2003  1998  2000  2005  1999  2008  2005  1997  2005  2008  1997 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   7.4   8.8   5.6   4.8   2.8   1.1   0.7   0.8   2.0   2.8   3.5   6.2 |   46.6
    >= 0.10         |   3.7   4.4   2.6   1.8   1.1   0.2   0.2   0.0   0.5   1.2   1.4   2.5 |   19.6
    >= 0.25         |   2.5   3.2   1.3   1.2   0.7   0.0   0.2   0.0   0.4   0.8   0.9   1.5 |   12.7
    >= 0.50         |   1.4   1.9   0.8   0.6   0.3   0.0   0.2   0.0   0.2   0.5   0.5   0.7 |    7.2
    >= 1.00         |   0.5   1.2   0.3   0.3   0.0   0.0   0.0   0.0   0.0   0.2   0.3   0.5 |    3.4
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|  14.1  14.7  14.4  14.6  14.8  14.3  11.9  11.5  11.7  12.9  13.5  15.1 |   13.6
Daily Avg Max 2-Min |  27.4  29.1  29.2  29.5  29.3  28.1  23.6  22.6  23.0  25.5  25.9  28.4 |   26.8
Daily Avg Peak Gust |  33.0  35.4  35.2  35.9  36.2  34.8  29.4  28.4  28.6  31.4  31.8  34.4 |   32.9
                    |                                                                         |
Maximum Daily Avg   |  31.9  36.2  31.4  28.6  27.7  32.2  23.4  20.7  25.6  31.2  28.2  30.7 |   36.2
                    |                                                                         |
Maximum 2-Minute Avg|    58    54    56    58    58    52    44    38    54    54    53    60 |     60
                    |                                                                         |
Date of Max 2min-Day|    05    03    20    12    02    06    06    15    17    20    28    28 |
               -Year|  2007  1998  2000  2007  2001  2007  2003  2002  2002  2007  1996  2006 |
                    |                                                                         |
Maximum Peak Gust   |    74    74    66    79    67    71    55    46    67    67    62    71 |     79
                    |                                                                         |
Date of Max Gust-Day|    05    03    20    30    02    11    06    15    17    21    28    26 |
               -Year|  2007  1998  2000  2008  2001  2008  2003  2002  2002  2007  1996  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  18.8  19.1  21.1  22.3  23.8  20.6  13.1  10.5  10.9  16.0  16.0  19.5 |  211.7
   Peak Gust >=40   |   6.6   8.8   8.8   9.3   8.8   7.5   1.9   1.0   1.8   5.3   5.8   9.0 |   74.6
   Peak Gust >=50   |   1.5   2.8   2.8   2.4   3.2   1.8   0.2   0.0   0.2   1.5   1.5   2.6 |   20.4
                    |                                                                         |
   Max 2-Minute >=30|  11.5  12.5  13.0  13.1  12.5  10.7   3.1   2.3   3.5   8.4  10.1   0.0 |  100.8
   Max 2-Minute >=40|   2.5   3.8   4.3   3.2   3.7   2.6   0.3   0.0   0.2   2.1   2.2   0.0 |   24.8
                    |                                                                         |
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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.