STATION:  SACRAMENTO EXECUTIVE AIRPORT (KSAC), 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        |  54.5  59.8  66.7  70.6  80.1  87.0  92.5  91.5  87.0  77.1  63.9  55.4 |   73.8
Avg Min Temp        |  39.3  41.2  43.8  45.8  51.9  56.4  59.2  58.6  55.7  49.3  43.1  38.9 |   48.6
Avg Temperature     |  46.9  50.5  55.2  58.2  66.0  71.7  75.8  75.1  71.4  63.2  53.5  47.2 |   61.2
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    67    75    84    95   103   105   111   110   105   104    81    72 |    111
                    |                                                                         |
    Date of Ext-Day |    17    16    31    26    31    14    23    10    01    02    04    19 |
               -Year|  1998  2007  2001  2004  2001  2000  2006  1996  1998  2001  2007  1999 |
                    |                                                                         |
    Extreme Min Temp|    21    28    31    31    40    46    50    51    42    36    28    20 |     20
                    |                                                                         |
    Date of Ext-Day |    15    16    08    09    11    07    04    17    30    31    29    23 |
               -Year|  2007  2006  2002  1999  2000  1999  1999  2006  2007  2002  2004  1998 |
                    |                                                                         |
Heating Degree Days |   561   409   305   218    64     7     0     0     7    95   345   553 |   2564
Cooling Degree Days |     0     0     1    14    95   209   336   312   198    39     0     0 |   1204
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.4   5.8  10.7  20.3  19.3  11.8   1.7   0.0   0.0 |   70.1
    Max Temp >= 75  |   0.0   0.1   5.9   9.6  22.2  28.2  30.9  30.5  27.9  19.7   2.0   0.0 |  177.0
    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  |   5.6   1.7   0.2   0.1   0.0   0.0   0.0   0.0   0.0   0.0   1.5   5.7 |   14.7
    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   0.1 |    0.1
    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  |  40.6  42.4  44.0  44.4  48.7  51.7  55.0  53.9  51.0  46.1  44.7  40.4 |   46.9
Avg Wet Bulb Temp   |  43.6  46.4  49.3  50.7  55.8  59.5  62.4  61.3  58.9  53.4  48.7  43.7 |   52.8
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.16 30.09 30.06 30.01 29.94 29.88 29.88 29.88 29.87 29.98 30.10 30.16 |  30.00
(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   |   1.2   1.1   0.9   0.4   0.6   0.2   0.3   0.4   0.5   0.5   2.0   1.8 |   10.0
    Heavy Fog       |   9.7   3.7   1.9   0.3   0.1   0.0   0.0   0.0   0.0   0.7   6.0   7.9 |   30.3
    Fog             |  22.6  18.3  14.5   8.5   5.2   1.1   1.0   1.8   3.6  11.3  20.3  20.5 |  128.7
    Hail            |   0.0   0.1   0.0   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.3
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  3.92  3.83  1.83  1.17  0.83  0.16  0.00  0.05  0.09  0.72  1.77  3.71 |  18.08
                    |                                                                         |
Maximum Daily       |  2.99  2.16  0.92  1.14  1.67  0.48  0.05  0.29  0.50  0.85  1.99  2.12 |   2.99
                    |                                                                         |
    Date of Ext-Day |    24    03    06    04    20    12    23    22    24    26    01    31 |
               -Year|  2000  1998  2002  2006  2002  1998  1998  2003  2001  2004  2008  2005 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  12.1  10.9   7.5   5.1   3.9   0.9   0.2   0.3   0.7   4.2   9.0  10.8 |   65.7
    >= 0.10         |   7.0   7.8   4.5   3.0   2.1   0.4   0.0   0.2   0.3   1.8   4.1   6.8 |   38.1
    >= 0.25         |   4.7   5.1   2.9   2.1   1.1   0.2   0.0   0.1   0.1   1.1   2.5   5.2 |   25.1
    >= 0.50         |   2.5   3.1   1.5   0.6   0.4   0.0   0.0   0.0   0.1   0.5   1.2   2.5 |   12.4
    >= 1.00         |   0.8   1.0   0.0   0.1   0.2   0.0   0.0   0.0   0.0   0.0   0.2   1.0 |    3.3
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   5.0   5.7   6.4   7.0   7.3   7.6   7.2   6.6   5.7   5.2   4.4   5.3 |    6.1
Daily Avg Max 2-Min |  13.5  15.1  15.9  17.0  16.9  16.8  15.4  14.4  13.8  13.6  13.0  14.4 |   15.0
Daily Avg Peak Gust |  17.1  19.1  20.0  21.5  21.3  21.0  19.4  18.3  17.8  17.3  16.4  18.4 |   19.0
                    |                                                                         |
Maximum Daily Avg   |  18.0  18.6  22.5  17.3  21.6  19.6  14.2  14.6  17.7  22.3  17.0  21.0 |   22.5
                    |                                                                         |
Maximum 2-Minute Avg|    38    37    36    33    38    38    53    26    36    36    38    38 |     53
                    |                                                                         |
Date of Max 2min-Day|    01    25    20    03    02    16    13    05    22    22    24    29 |
               -Year|  2006  2004  2000  1999  2001  1998  2008  2007  2006  2000  2001  2003 |
                    |                                                                         |
Maximum Peak Gust   |    56    53    44    43    46    46    87    35    48    46    49    53 |     87
                    |                                                                         |
Date of Max Gust-Day|    01    27    04    03    02    16    13    05    22    19    24    29 |
               -Year|  2006  2006  2001  1999  2001  1998  2008  2007  2006  2004  2001  2003 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   3.2   3.9   3.7   3.6   1.9   1.6   0.6   0.3   1.2   1.9   2.0   4.2 |   28.1
   Peak Gust >=40   |   0.6   0.6   0.6   0.2   0.2   0.1   0.1   0.0   0.1   0.4   0.6   0.6 |    4.0
   Peak Gust >=50   |   0.1   0.2   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0   0.1 |    0.5
                    |                                                                         |
   Max 2-Minute >=30|   0.6   0.8   0.7   0.6   0.2   0.3   0.1   0.0   0.2   0.6   0.6   0.0 |    4.6
   Max 2-Minute >=40|   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
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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.