AFOS product CLIAPC
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CDUS46 KMTR 070827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1226 AM PST SAT DEC 7 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 6 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         48   1013 PM  66    2006  57     -9       61       
  MINIMUM         20R   523 AM  22    2009  36    -16       41       
  AVERAGE         34                        47    -13       51      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.47                                      0.00    
  MONTH TO DATE    0.47                                      1.72    
  SINCE JUL 1      2.20                                      5.33    
  SINCE JAN 1      4.17                                     19.10    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  MONTH TO DATE    0.0                                               
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       31                                        14       
  MONTH TO DATE  143                                        62       
  SINCE DEC 1    143                                        62       
  SINCE JUL 1    822                                       634       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    303                                       204       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   0   RESULTANT WIND DIRECTION   S (180)      
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     6.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           800 PM                                     
 LOWEST     49           200 PM                                     
 AVERAGE    71                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   57        70      2001                    
 MINIMUM TEMPERATURE (F)   36        22      2009                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER  7 2013......SUNRISE   713 AM PST   SUNSET   449 PM PST   
DECEMBER  8 2013......SUNRISE   713 AM PST   SUNSET   449 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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