AFOS product CLIAPC
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CDUS46 KMTR 310828
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1228 AM PST TUE DEC 31 2013


................................... 

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 30 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2013


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         63R   140 PM  61    1999  54      9       58       
  MINIMUM         27R   645 AM  28    2000  36     -9       32       
  AVERAGE         45                        45      0       45      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.47                                      4.18    
  SINCE JUL 1      2.20                                      7.79    
  SINCE JAN 1      4.17                                     21.56    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       20                                        20       
  MONTH TO DATE  646                                       515       
  SINCE DEC 1    646                                       515       
  SINCE JUL 1   1325                                      1087       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    303                                       204       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION   E (80)       
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     E (100)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     E (100)      
  AVERAGE WIND SPEED     3.7                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89          1100 PM                                     
 LOWEST     34           200 PM                                     
 AVERAGE    62                                                       

..........................................................

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   54        62      2011                    
 MINIMUM TEMPERATURE (F)   36        27      2012                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 31 2013......SUNRISE   726 AM PST   SUNSET   459 PM PST   
JANUARY  1 2014.......SUNRISE   726 AM PST   SUNSET   500 PM PST   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




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