STATION:  SANTA MONICA MUNI AIRPORT (KSMO), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Apr 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        |  65.4  65.2  66.2  66.6  69.5  71.7  75.3  75.4  74.7  72.0  69.4  65.0 |   69.7
Avg Min Temp        |  47.9  48.2  50.9  51.9  56.8  60.1  63.3  62.9  60.8  56.9  51.9  47.4 |   54.9
Avg Temperature     |  56.7  56.7  58.6  59.2  63.2  65.9  69.3  69.2  67.8  64.4  60.6  56.2 |   62.3
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    88    88    90    93    94    94    91    85    99    96    91    82 |     99
                    |                                                                         |
    Date of Ext-Day |    31    21    29    13    03    27    24    14    05    05    07    11 |
               -Year|  2003  2002  2004  2008  2004  2006  2006  2003  2004  2005  2006  2004 |
                    |                                                                         |
    Extreme Min Temp|    32    38    39    43    50    54    56    58    54    48    38    38 |     32
                    |                                                                         |
    Date of Ext-Day |    14    03    12    01    01    07    12    08    21    30    30    27 |
               -Year|  2007  2002  2006  1998  2002  2005  2001  2002  2007  2000  2006  2008 |
                    |                                                                         |
Heating Degree Days |   269   241   208   186    78    14     2     0     7    61   151   273 |   1491
Cooling Degree Days |    11     6     9    12    21    42   136   129    89    43    20     2 |    521
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.1   0.7   0.5   0.3   0.1   0.0   0.8   1.0   0.1   0.0 |    3.6
    Max Temp >= 75  |   4.5   3.3   3.3   2.8   3.9   4.3  15.8  16.8  12.2   8.2   6.3   3.6 |   84.8
    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  |   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
    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  |  39.0  42.3  45.8  47.5  52.3  56.6  60.6  59.7  57.6  53.0  45.4  40.5 |   50.0
Avg Wet Bulb Temp   |  48.0  49.8  52.0  52.3  56.9  59.7  63.2  61.9  60.9  57.2  52.3  48.8 |   55.3
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.09 30.05 30.03 29.99 29.94 29.90 29.91 29.91 29.89 29.95 30.03 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   |   0.4   1.0   0.2   0.4   0.1   0.1   0.1   0.1   0.4   0.7   0.4   0.3 |    4.4
    Heavy Fog       |   2.2   0.9   1.5   0.3   1.1   0.4   1.0   0.6   2.0   2.3   2.0   2.0 |   16.4
    Fog             |  12.2  12.0  13.8   9.4  10.2  12.1  13.9  12.9  12.6  16.1  11.4  12.4 |  149.1
    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     |  2.99  3.67  1.26  0.53  0.19  0.00  0.24  0.00  0.10  0.85  0.56  1.69 |  12.10
                    |                                                                         |
Maximum Daily       |  2.99  2.27  2.54  1.19  0.36  0.01  1.31  0.01  0.48  1.11  0.74  2.87 |   2.99
                    |                                                                         |
    Date of Ext-Day |    10    12    15    04    22    16    31    27    21    26    24    28 |
               -Year|  2001  2001  2003  2006  2006  2001  2002  2002  2007  2004  2001  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   5.8   7.0   4.5   2.6   1.4   0.2   0.6   0.2   1.2   5.1   5.2   7.3 |   41.3
    >= 0.10         |   3.5   5.0   1.9   1.0   0.6   0.0   0.2   0.0   0.2   1.7   1.6   2.9 |   18.7
    >= 0.25         |   3.0   3.8   1.1   0.9   0.4   0.0   0.2   0.0   0.1   1.1   0.8   1.3 |   12.8
    >= 0.50         |   2.5   2.4   0.6   0.3   0.0   0.0   0.2   0.0   0.0   0.8   0.3   0.8 |    8.0
    >= 1.00         |   1.0   1.4   0.4   0.1   0.0   0.0   0.1   0.0   0.0   0.1   0.0   0.6 |    3.7
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   4.9   5.1   5.2   5.4   5.3   5.2   5.0   4.7   4.4   4.1   4.1   4.4 |    4.8
Daily Avg Max 2-Min |  13.6  14.2  14.9  14.9  14.4  13.6  13.5  13.3  13.1  12.8  12.2  12.5 |   13.6
Daily Avg Peak Gust |  18.0  18.4  19.4  19.7  18.4  17.2  16.9  16.5  16.6  16.2  16.2  16.9 |   17.5
                    |                                                                         |
Maximum Daily Avg   |  14.8  11.0  16.5  10.9  10.2   7.3   7.2   6.8   7.8   9.7  12.3  11.0 |   16.5
                    |                                                                         |
Maximum 2-Minute Avg|    37    30    32    28    23    22    18    24    23    28    28    29 |     37
                    |                                                                         |
Date of Max 2min-Day|    06    19    27    05    05    25    08    26    19    19    24    25 |
               -Year|  2003  2003  2003  2006  2007  2006  2001  2007  2004  2004  2001  2003 |
                    |                                                                         |
Maximum Peak Gust   |    54    41    46    38    32    29    26    32    33    40    39    43 |     54
                    |                                                                         |
Date of Max Gust-Day|    06    19    27    05    09    06    16    26    19    20    26    21 |
               -Year|  2003  2003  2003  2006  2003  2007  2003  2007  2004  2007  2005  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   2.0   1.2   2.0   1.2   0.4   0.0   0.0   0.1   0.1   0.7   1.2   2.4 |   11.3
   Peak Gust >=40   |   0.6   0.1   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.1   0.0   0.3 |    1.5
   Peak Gust >=50   |   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.1
                    |                                                                         |
   Max 2-Minute >=30|   0.8   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    1.0
   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.