STATION:  MERCED MUNI/MACREADY FLD APT (KMCE), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Aug 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        |  53.3  60.1  66.9  72.2  83.2  90.8  95.6  94.1  88.9  78.1  64.2  55.0 |   75.2
Avg Min Temp        |  36.5  38.7  41.5  44.7  52.1  57.7  61.9  60.0  55.8  48.5  41.3  36.3 |   47.9
Avg Temperature     |  44.9  49.4  54.2  58.5  67.7  74.3  78.8  77.0  72.3  63.3  52.8  45.6 |   61.6
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    68    77    94    97   105   106   112   107   106    97    82    74 |    112
                    |                                                                         |
    Date of Ext-Day |    08    20    12    27    31    27    23    29    07    01    16    20 |
               -Year|  2004  2002  2005  2004  2001  2003  2006  2008  2008  2001  2008  1999 |
                    |                                                                         |
    Extreme Min Temp|    19    26    31    30    38    45    50    52    42    38    26    18 |     18
                    |                                                                         |
    Date of Ext-Day |    15    03    19    10    04    07    04    06    20    31    25    23 |
               -Year|  2007  2002  2002  1999  1999  1999  1999  2002  2007  2003  2003  1998 |
                    |                                                                         |
Heating Degree Days |   622   441   336   212    43     4     0     0     8    97   367   600 |   2731
Cooling Degree Days |     0     0     1    16   125   282   426   372   228    43     0     0 |   1493
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.1   1.0   7.2  18.0  26.0  24.1  15.1   2.2   0.0   0.0 |   93.7
    Max Temp >= 75  |   0.0   0.1   5.4  11.8  26.4  29.4  31.0  30.8  28.5  20.9   2.3   0.0 |  186.6
    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  |   9.5   4.3   1.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0   3.1  10.8 |   29.0
    Min Temp <= 20  |   0.3   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2 |    0.5
    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  |  39.5  42.5  43.9  43.2  46.1  49.5  53.2  52.8  49.9  45.0  43.1  39.5 |   45.7
Avg Wet Bulb Temp   |  42.3  45.9  48.8  50.8  56.1  60.2  63.4  62.5  59.3  53.2  47.8  42.4 |   52.7
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.17 30.09 30.06 30.00 29.92 29.87 29.87 29.87 29.86 29.97 30.10 30.17 |  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   |   0.1   0.4   0.8   0.6   0.5   0.1   0.1   0.3   0.4   0.3   0.2   0.1 |    3.8
    Heavy Fog       |  12.1   7.7   3.2   1.3   0.0   0.0   0.0   0.0   0.0   0.6   7.1   9.9 |   42.0
    Fog             |  25.8  22.7  21.4  10.8   3.0   0.5   0.7   4.7   7.0  11.5  20.8  24.2 |  153.0
    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     |  2.08  2.28  1.35  1.08  0.48  0.02  0.00  0.00  0.08  0.81  0.83  1.69 |  10.70
                    |                                                                         |
Maximum Daily       |  1.05  1.24  1.14  1.94  1.00  0.18  0.01  0.00  0.25  1.44  1.05  1.36 |   1.94
                    |                                                                         |
    Date of Ext-Day |    23    15    22    17    21    08    24          22    26    08    16 |
               -Year|  2000  2005  2005  2000  2006  2000  2007        2007  2000  2002  2002 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  10.2  11.1   7.2   5.2   2.5   0.2   0.1   0.0   0.8   3.3   8.8  10.2 |   59.5
    >= 0.10         |   4.9   6.0   3.9   2.4   1.1   0.1   0.0   0.0   0.4   1.5   2.4   4.6 |   27.4
    >= 0.25         |   2.9   3.6   2.3   1.5   0.6   0.0   0.0   0.0   0.1   1.0   0.9   2.7 |   15.7
    >= 0.50         |   1.4   1.2   0.5   0.5   0.4   0.0   0.0   0.0   0.0   0.7   0.3   0.9 |    5.9
    >= 1.00         |   0.1   0.2   0.1   0.1   0.1   0.0   0.0   0.0   0.0   0.2   0.1   0.1 |    1.0
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   4.7   5.3   5.8   6.9   7.9   8.2   7.5   6.9   5.9   5.0   4.2   5.0 |    6.1
Daily Avg Max 2-Min |  13.0  14.5  14.7  16.5  16.7  16.2  14.5  13.9  13.5  13.0  12.1  13.5 |   14.3
Daily Avg Peak Gust |  15.8  17.8  18.4  20.8  21.3  20.5  18.1  17.3  16.8  16.3  15.0  16.7 |   17.9
                    |                                                                         |
Maximum Daily Avg   |  19.3  17.7  17.8  15.9  22.1  18.1  11.4  10.9  11.8  16.4  17.9  20.2 |   22.1
                    |                                                                         |
Maximum 2-Minute Avg|    39    38    33    32    38    33    29    26    24    32    36    43 |     43
                    |                                                                         |
Date of Max 2min-Day|    07    25    25    03    22    10    03    01    26    09    30    06 |
               -Year|  2005  2004  2006  1999  2008  2008  2007  2006  2005  2008  1998  2007 |
                    |                                                                         |
Maximum Peak Gust   |    47    46    43    40    47    40    38    30    29    45    40    51 |     51
                    |                                                                         |
Date of Max Gust-Day|    10    25    25    12    21    03    03    04    26    24    30    06 |
               -Year|  2001  2004  2006  2003  2006  2006  2007  2006  2005  1998  1998  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   1.8   2.9   2.4   2.8   2.0   1.5   0.3   0.1   0.0   1.3   1.2   2.6 |   19.1
   Peak Gust >=40   |   0.8   0.4   0.1   0.2   0.4   0.2   0.0   0.0   0.0   0.3   0.1   0.5 |    3.0
   Peak Gust >=50   |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2 |    0.2
                    |                                                                         |
   Max 2-Minute >=30|   0.7   0.9   0.3   0.5   0.5   0.2   0.0   0.0   0.0   0.5   0.2   0.0 |    3.9
   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.