STATION:  CRESCENT CITY-JACK MCNAMARA FIELD ARPT (KCEC), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Sep 2000 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        |  53.7  54.3  54.5  55.1  58.4  60.1  62.2  62.2  61.6  59.8  56.7  54.3 |   57.8
Avg Min Temp        |  41.3  41.4  42.5  43.5  46.8  48.7  51.7  51.8  48.8  46.3  43.9  41.9 |   45.7
Avg Temperature     |  47.5  47.9  48.5  49.3  52.6  54.4  56.9  57.0  55.2  53.0  50.3  48.1 |   51.7
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    71    70    69    74    82    71    71    75    85    81    75    68 |     85
                    |                                                                         |
    Date of Ext-Day |    07    09    29    10    16    28    18    29    03    26    15    20 |
               -Year|  2003  2006  2003  2004  2008  2003  2004  2007  2003  2003  2008  2005 |
                    |                                                                         |
    Extreme Min Temp|    26    30    32    33    32    40    42    42    40    32    31    31 |     26
                    |                                                                         |
    Date of Ext-Day |    12    20    08    03    01    10    04    31    30    31    22    01 |
               -Year|  2007  2006  2002  2001  2001  2002  2002  2002  2002  2002  2003  2007 |
                    |                                                                         |
Heating Degree Days |   542   484   512   470   385   317   250   247   295   372   441   525 |   4840
Cooling Degree Days |     0     0     0     0     1     0     0     0     1     1     0     0 |      2
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   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
    Max Temp >= 75  |   0.0   0.0   0.0   0.0   0.5   0.0   0.0   0.1   0.6   0.9   0.1   0.0 |    2.2
    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  |   1.4   0.4   0.6   0.0   0.1   0.0   0.0   0.0   0.0   0.1   0.4   0.3 |    3.4
    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  |  42.1  41.9  43.8  44.5  47.9  50.2  53.1  53.6  50.1  47.8  45.0  42.7 |   46.9
Avg Wet Bulb Temp   |  45.1  45.2  46.5  47.0  50.3  52.2  54.6  54.9  52.0  50.1  47.8  45.6 |   49.3
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.15 30.09 30.15 30.07 30.07 30.05 30.01 30.00 30.00 30.06 30.14 30.12 |  30.08
(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   |   0.8   0.2   0.5   0.5   0.2   0.0   0.5   0.5   0.4   0.1   0.8   0.6 |    5.1
    Heavy Fog       |   2.5   2.5   4.1   2.2   3.1   7.9  10.1   9.5  10.1   7.9   3.3   2.0 |   65.3
    Fog             |  21.2  18.1  22.9  20.9  21.8  23.9  23.0  22.6  21.3  22.4  19.4  19.6 |  257.1
    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     |  8.67  5.98  6.69  5.51  2.02  1.31  0.25  0.46  0.60  3.59  7.61 13.19 |  55.87
                    |                                                                         |
Maximum Daily       |  2.64  3.56  1.55  2.11  1.33  1.43  0.46  0.79  1.07  2.24  2.17  4.36 |   4.36
                    |                                                                         |
    Date of Ext-Day |    10    27    27    03    08    26    10    22    30    20    19    25 |
               -Year|  2006  2006  2005  2005  2005  2001  2001  2001  2007  2000  2006  2006 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  18.7  12.4  16.4  15.8   9.2   7.9   5.4   8.0   9.1  12.3  16.7  19.3 |  151.0
    >= 0.10         |  13.9   9.4  11.5  10.6   4.7   2.9   0.6   1.1   1.6   5.5  11.3  14.9 |   88.0
    >= 0.25         |  10.2   7.0   8.9   7.2   2.9   1.6   0.4   0.5   0.7   3.9   8.3  12.7 |   64.3
    >= 0.50         |   7.2   4.4   5.5   4.0   1.1   0.8   0.0   0.4   0.1   2.7   5.6   9.7 |   41.3
    >= 1.00         |   2.4   1.5   2.2   1.2   0.3   0.2   0.0   0.0   0.1   1.6   2.3   4.6 |   16.4
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   9.1   8.5   9.3   8.8   8.5   8.3   6.8   6.5   6.8   7.1   7.9  10.0 |    8.1
Daily Avg Max 2-Min |  20.1  19.7  20.3  19.3  18.2  18.2  16.1  15.7  15.8  16.7  17.6  22.0 |   18.3
Daily Avg Peak Gust |  25.1  24.4  25.3  23.9  23.2  23.1  20.0  19.7  19.9  21.2  21.9  27.8 |   23.0
                    |                                                                         |
Maximum Daily Avg   |  28.1  25.4  26.4  20.7  21.7  26.6  21.4  18.0  20.7  23.6  25.1  29.8 |   29.8
                    |                                                                         |
Maximum 2-Minute Avg|    48    53    48    46    36    38    35    33    32    45    46    52 |     53
                    |                                                                         |
Date of Max 2min-Day|    04    25    01    08    02    06    07    30    20    30    07    15 |
               -Year|  2008  2004  2006  2005  2001  2002  2004  2008  2000  2001  2002  2002 |
                    |                                                                         |
Maximum Peak Gust   |    67    64    58    53    47    49    47    47    46    58    58    68 |     68
                    |                                                                         |
Date of Max Gust-Day|    04    25    01    08    22    07    02    30    13    30    12    19 |
               -Year|  2008  2004  2006  2005  2008  2002  2008  2008  2006  2001  2006  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |  10.0   8.6   9.0   7.6   7.4   7.4   3.2   3.8   4.7   5.8   7.1  13.7 |   88.2
   Peak Gust >=40   |   4.4   2.8   2.9   1.6   2.2   2.0   0.3   0.2   0.8   0.9   1.9   6.6 |   26.6
   Peak Gust >=50   |   0.5   0.5   0.8   0.1   0.0   0.0   0.0   0.0   0.0   0.1   0.4   1.9 |    4.3
                    |                                                                         |
   Max 2-Minute >=30|   5.4   4.6   4.2   2.6   2.6   2.5   0.4   0.5   1.1   1.1   2.6   0.0 |   27.7
   Max 2-Minute >=40|   0.5   0.5   0.8   0.2   0.0   0.0   0.0   0.0   0.0   0.1   0.4   0.0 |    2.6
                    |                                                                         |
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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.