STATION:  MARYSVILLE-YUBA COUNTRY AIRPORT (KMYV), CA

CLIMATOLOGICAL SUMMARY.  Period of Record: Oct 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        |  54.0  60.3  67.2  70.7  83.2  90.7  96.5  94.5  88.8  77.8  63.6  54.8 |   75.2
Avg Min Temp        |  37.4  39.8  43.0  44.6  52.1  57.4  61.2  58.6  54.4  48.1  41.2  38.3 |   48.0
Avg Temperature     |  45.7  50.1  55.1  57.6  67.7  74.0  78.9  76.6  71.6  63.0  52.4  46.6 |   61.6
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    68    75    83    96   104   107   112   108   105   104    79    66 |    112
                    |                                                                         |
    Date of Ext-Day |    29    27    16    26    31    23    23    28    02    02    04    24 |
               -Year|  2007  2002  2004  2004  2001  2006  2006  2008  2003  2001  2007  2005 |
                    |                                                                         |
    Extreme Min Temp|    20    27    29    32    37    43    51    48    35    22    27    18 |     18
                    |                                                                         |
    Date of Ext-Day |    15    16    08    03    09    07    22    06    10    28    13    12 |
               -Year|  2007  2006  2002  2001  2003  2005  2008  2002  2008  2006  2000  2007 |
                    |                                                                         |
Heating Degree Days |   598   422   310   235    42     4     0     0     8   106   378   571 |   2674
Cooling Degree Days |     0     0     3    14   120   276   429   359   206    43     0     0 |   1450
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   0.0   0.0   0.0   0.6   8.1  17.3  27.6  25.1  15.1   2.1   0.0   0.0 |   95.9
    Max Temp >= 75  |   0.0   0.3   6.5   9.4  25.7  29.5  31.0  31.0  28.9  20.5   2.0   0.0 |  184.7
    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  |   8.3   2.6   0.6   0.3   0.0   0.0   0.0   0.0   0.0   0.3   3.5   8.0 |   23.6
    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   0.1 |    0.4
    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  |  39.7  41.1  43.3  43.5  48.1  50.4  54.8  53.1  49.3  44.8  43.3  40.7 |   46.0
Avg Wet Bulb Temp   |  42.9  45.6  49.2  50.2  56.8  60.5  64.1  62.4  58.7  53.0  47.6  43.8 |   52.9
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | 30.17 30.09 30.06 30.00 29.93 29.88 29.87 29.87 29.88 29.98 30.11 30.15 |  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   |   0.2   0.9   1.6   1.2   0.5   0.1   0.3   0.4   0.2   0.2   0.4   0.3 |    6.5
    Heavy Fog       |   8.2   2.6   0.6   0.4   0.0   0.0   0.0   0.0   0.0   0.6   5.2   7.3 |   25.0
    Fog             |  23.1  17.3  11.5   8.0   3.9   1.1   0.4   2.4   2.9  10.3  18.5  22.1 |  121.6
    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     |  3.10  3.01  2.13  1.55  0.69  0.12  0.01  0.07  0.08  1.22  2.10  4.55 |  18.62
                    |                                                                         |
Maximum Daily       |  1.86  1.54  1.12  0.92  0.97  0.38  0.03  0.34  0.36  1.73  2.15  2.02 |   2.15
                    |                                                                         |
    Date of Ext-Day |    04    27    01    12    20    08    18    02    24    30    07    31 |
               -Year|  2008  2006  2004  2003  2002  2005  2007  2003  2001  2001  2002  2005 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  12.4  10.4   7.9   7.1   3.5   1.0   0.3   0.4   1.0   5.0   9.0  13.6 |   71.5
    >= 0.10         |   7.0   6.7   4.8   3.8   1.8   0.4   0.0   0.2   0.2   2.7   3.8   8.7 |   39.9
    >= 0.25         |   4.8   4.5   3.4   2.5   0.8   0.3   0.0   0.1   0.1   1.6   2.3   6.7 |   27.0
    >= 0.50         |   1.9   2.3   1.5   1.1   0.5   0.0   0.0   0.0   0.0   0.8   1.0   4.2 |   13.3
    >= 1.00         |   0.5   0.3   0.1   0.0   0.0   0.0   0.0   0.0   0.0   0.3   0.7   0.7 |    2.5
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|   6.0   7.0   7.3   7.5   7.5   7.6   6.8   6.5   5.9   5.8   5.4   7.0 |    6.7
Daily Avg Max 2-Min |  15.6  16.6  17.0  17.4  16.4  16.8  15.8  15.2  15.0  14.6  15.0  17.2 |   16.0
Daily Avg Peak Gust |  19.3  21.0  21.1  21.9  21.2  22.1  20.8  20.0  19.6  18.5  18.7  21.8 |   20.5
                    |                                                                         |
Maximum Daily Avg   |  26.8  23.9  19.7  17.2  19.6  20.2  13.8  16.9  19.6  19.4  22.2  23.6 |   26.8
                    |                                                                         |
Maximum 2-Minute Avg|    52    46    48    36    52    38    47    43    48    70    56    48 |     70
                    |                                                                         |
Date of Max 2min-Day|    04    25    04    28    02    28    17    27    01    20    10    16 |
               -Year|  2008  2004  2001  2007  2006  2006  2006  2007  2007  2007  2007  2002 |
                    |                                                                         |
Maximum Peak Gust   |    67    87    58    41    86    69    77    51    74    79    89    87 |     89
                    |                                                                         |
Date of Max Gust-Day|    04    18    04    28    02    14    17    27    01    20    10    04 |
               -Year|  2008  2004  2001  2004  2006  2007  2006  2007  2007  2007  2007  2007 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   5.6   6.0   5.9   4.5   2.9   5.0   4.3   4.0   4.0   3.7   4.5   7.7 |   58.1
   Peak Gust >=40   |   1.8   1.3   0.8   0.4   0.5   0.8   0.6   0.7   1.1   0.6   0.7   3.5 |   12.7
   Peak Gust >=50   |   0.4   0.4   0.3   0.0   0.1   0.3   0.4   0.1   0.1   0.3   0.2   0.5 |    3.2
                    |                                                                         |
   Max 2-Minute >=30|   1.9   1.7   1.4   1.0   0.7   0.9   0.7   0.6   1.2   0.8   1.2   0.0 |   12.1
   Max 2-Minute >=40|   0.3   0.3   0.1   0.0   0.1   0.0   0.1   0.1   0.1   0.1   0.2   0.0 |    1.5
                    |                                                                         |
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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.