AFOS product CLIAPC
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CDUS46 KMTR 120841
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1241 AM PST SAT DEC 12 2015


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 11 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         58    217 PM  64    2014  56      2       64       
                                      2005                          
  MINIMUM         39    801 AM  25    2013  36      3       50       
  AVERAGE         49                        46      3       57      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.04                                      3.17    
  MONTH TO DATE    0.32                                      6.80    
  SINCE OCT 1      1.73                                      9.05    
  SINCE JAN 1      5.83                                     17.70    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                                         8       
  MONTH TO DATE  155                                        86       
  SINCE DEC 1    155                                        86       
  SINCE JUL 1    696                                       559       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    378                                       267       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   W (280)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (280)      
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     W (290)      
  AVERAGE WIND SPEED     7.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           800 AM                                     
 LOWEST     55           100 PM                                     
 AVERAGE    78                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        60      2010                    
 MINIMUM TEMPERATURE (F)   36        26      2013                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 12 2015......SUNRISE   716 AM PST   SUNSET   449 PM PST   
DECEMBER 13 2015......SUNRISE   717 AM PST   SUNSET   450 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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