AFOS product CLIAPC
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CDUS46 KMTR 160833
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1233 AM PST MON DEC 16 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 15 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         62    310 PM  64    1998  55      7       47       
  MINIMUM         28    732 AM  26    2005  36     -8       30       
  AVERAGE         45                        46     -1       39      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.07    
  MONTH TO DATE    0.47                                      1.81    
  SINCE JUL 1      2.20                                      5.42    
  SINCE JAN 1      4.17                                     19.19    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       20                                        26       
  MONTH TO DATE  374                                       233       
  SINCE DEC 1    374                                       233       
  SINCE JUL 1   1053                                       805       
                                                                     
 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    14   HIGHEST WIND DIRECTION     N (20)       
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     S (190)      
  AVERAGE WIND SPEED     4.6                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           500 AM                                     
 LOWEST     36           300 PM                                     
 AVERAGE    64                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        69      2011                    
 MINIMUM TEMPERATURE (F)   36        28      2006                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 16 2013......SUNRISE   719 AM PST   SUNSET   451 PM PST   
DECEMBER 17 2013......SUNRISE   720 AM PST   SUNSET   451 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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