AFOS product CLIAPC
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797 
CDUS46 KMTR 110835
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1230 AM PST FRI DEC 11 2015


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 10 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         62    219 PM  63    2014  56      6       63       
                                      2012                          
  MINIMUM         47    929 PM  21    2013  36     11       53       
  AVERAGE         55                        46      9       58      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.12                                      0.15    
  MONTH TO DATE    0.28                                      3.63    
  SINCE OCT 1      1.69                                      5.88    
  SINCE JAN 1      5.79                                     14.53    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       10                                         7       
  MONTH TO DATE  139                                        78       
  SINCE DEC 1    139                                        78       
  SINCE JUL 1    680                                       551       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    378                                       267       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION     W (260)      
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED    11.9                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           200 AM                                     
 LOWEST     55          1200 PM                                     
 AVERAGE    78                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        64      2014                    
                                             2005                    
 MINIMUM TEMPERATURE (F)   36        25      2013                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 11 2015......SUNRISE   715 AM PST   SUNSET   449 PM PST   
DECEMBER 12 2015......SUNRISE   716 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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