AFOS product CLIAPC
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CDUS46 KMTR 130841
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1241 AM PST SUN DEC 13 2015


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 12 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         55    345 PM  60    2010  56     -1       54       
  MINIMUM         35    525 AM  26    2013  36     -1       40       
  AVERAGE         45                        46     -1       47      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T                                         0.27    
  MONTH TO DATE    0.32                                      7.07    
  SINCE OCT 1      1.73                                      9.32    
  SINCE JAN 1      5.83                                     17.97    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       20                                        18       
  MONTH TO DATE  175                                       104       
  SINCE DEC 1    175                                       104       
  SINCE JUL 1    716                                       577       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    378                                       267       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  SW (240)      
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     S (190)      
  AVERAGE WIND SPEED     4.0                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           500 AM                                     
 LOWEST     66           100 PM                                     
 AVERAGE    83                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   56        61      2004                    
 MINIMUM TEMPERATURE (F)   36        24      2013                    
                                             2007                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 13 2015......SUNRISE   717 AM PST   SUNSET   450 PM PST   
DECEMBER 14 2015......SUNRISE   718 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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