STATION:  OCEANSIDE MUNICIPAL ARPT (KOKB), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: May 1999 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        |  65.8  65.4  65.9  67.5  70.4  72.4  76.3  76.7  76.0  73.6  70.1  65.8 |   70.5
Avg Min Temp        |  40.4  42.9  46.3  48.5  54.5  58.0  61.9  61.7  58.1  51.9  45.0  39.1 |   50.7
Avg Temperature     |  53.1  54.1  56.1  58.0  62.4  65.2  69.1  69.2  67.1  62.8  57.5  52.4 |   60.6
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    88    91    88    97    95    93    94    86   101    95    94    86 |    101
                    |                                                                         |
    Date of Ext-Day |    06    22    29    27    03    20    22    10    05    08    15    07 |
               -Year|  2006  2002  2004  2008  2004  2008  2006  2003  2004  2008  2008  2001 |
                    |                                                                         |
    Extreme Min Temp|    25    29    32    37    42    47    51    51    45    37    30    29 |     25
                    |                                                                         |
    Date of Ext-Day |    15    05    03    01    22    01    12    09    28    13    30    05 |
               -Year|  2007  2002  2002  2000  2002  1999  2001  1999  2005  2008  2006  1999 |
                    |                                                                         |
Heating Degree Days |   370   308   277   213    90    29     3     2    16    90   228   389 |   2014
Cooling Degree Days |     1     1     1     4    10    36   130   133    78    21     3     0 |    418
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.1   0.0   0.4   0.2   0.2   0.3   0.0   0.4   1.0   0.4   0.0 |    3.1
    Max Temp >= 75  |   4.3   3.2   3.1   2.6   4.0   6.7  19.4  24.2  16.6   9.5   6.0   2.7 |  102.2
    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  |   3.1   1.4   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.4   3.6 |    8.8
    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  |  41.9  44.6  47.6  49.5  54.1  57.7  62.0  61.9  59.5  53.6  47.3  41.5 |   51.8
Avg Wet Bulb Temp   |  47.4  49.2  51.7  53.4  57.7  60.7  64.5  64.5  62.4  57.5  51.9  46.8 |   55.6
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.09 30.06 30.02 30.00 29.94 29.91 29.92 29.90 29.88 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   |   0.6   1.0   0.2   0.1   0.0   0.0   0.3   0.1   0.3   0.2   0.4   0.2 |    3.4
    Heavy Fog       |   4.4   3.4   2.7   1.9   1.1   1.3   1.1   1.7   4.1   3.6   4.9   4.4 |   34.8
    Fog             |  19.4  18.8  21.1  20.2  20.5  21.9  19.3  20.9  20.0  21.1  18.8  17.9 |  240.0
    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     |  1.73  3.30  0.95  0.88  0.16  0.07  0.02  0.07  0.07  0.93  0.86  1.34 |  10.37
                    |                                                                         |
Maximum Daily       |  1.97  2.40  1.05  1.75  0.57  0.17  0.10  0.44  0.24  2.08  2.69  1.38 |   2.69
                    |                                                                         |
    Date of Ext-Day |    09    25    15    14    22    03    12    26    29    27    30    15 |
               -Year|  2005  2003  2003  2003  2006  1999  1999  2007  2002  2004  2007  2008 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |   6.7  10.6   7.9   6.1   3.3   2.0   0.3   1.1   2.4   5.7   6.4   7.0 |   59.6
    >= 0.10         |   3.1   5.7   2.9   1.6   0.3   0.3   0.1   0.1   0.2   1.5   1.5   2.9 |   20.1
    >= 0.25         |   2.0   3.8   1.0   0.9   0.1   0.0   0.0   0.1   0.0   1.2   0.8   1.6 |   11.5
    >= 0.50         |   1.0   1.8   0.3   0.6   0.1   0.0   0.0   0.0   0.0   0.5   0.5   0.9 |    5.7
    >= 1.00         |   0.6   1.2   0.1   0.1   0.0   0.0   0.0   0.0   0.0   0.2   0.1   0.3 |    2.6
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   3.9   4.3   4.2   4.5   4.6   4.6   4.3   4.1   4.0   3.6   3.4   3.5 |    4.1
Daily Avg Max 2-Min |  13.6  14.5  14.3  14.9  14.1  13.6  13.7  13.7  13.9  13.4  13.1  13.4 |   13.9
Daily Avg Peak Gust |  17.1  18.5  18.4  19.5  18.2  17.4  17.4  17.3  17.6  17.0  16.7  17.0 |   17.7
                    |                                                                         |
Maximum Daily Avg   |  11.9  10.5  13.6   9.4   8.8   8.0   6.8   6.7   8.0   8.8   9.1  10.3 |   13.6
                    |                                                                         |
Maximum 2-Minute Avg|    30    26    28    29    28    26    46    28    30    25    29    39 |     46
                    |                                                                         |
Date of Max 2min-Day|    06    23    27    19    17    27    30    28    03    20    07    18 |
               -Year|  2003  2000  2007  2007  2008  2006  2008  2007  2007  2004  2006  2008 |
                    |                                                                         |
Maximum Peak Gust   |    38    43    43    41    41    41    83    38    33    31    36    49 |     83
                    |                                                                         |
Date of Max Gust-Day|    02    14    27    20    17    28    30    28    20    20    21    29 |
               -Year|  2006  2008  2007  2007  2008  2007  2008  2007  2008  2004  2006  2004 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   1.2   0.9   0.7   0.9   0.3   0.2   0.2   0.2   0.3   0.4   0.9   1.6 |    7.9
   Peak Gust >=40   |   0.0   0.1   0.1   0.1   0.1   0.1   0.2   0.0   0.0   0.0   0.0   0.3 |    1.1
   Peak Gust >=50   |   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
                    |                                                                         |
   Max 2-Minute >=30|   0.2   0.0   0.0   0.0   0.0   0.0   0.2   0.0   0.1   0.0   0.0   0.0 |    0.5
   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.