AFOS product CLIAPC
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CDUS46 KMTR 170828
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1227 AM PST TUE DEC 17 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 16 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         64    203 PM  69    2011  55      9       55       
  MINIMUM         34    459 AM  28    2006  36     -2       45       
  AVERAGE         49                        46      3       50      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.02    
  MONTH TO DATE    0.47                                      1.83    
  SINCE JUL 1      2.20                                      5.44    
  SINCE JAN 1      4.17                                     19.21    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                                        15       
  MONTH TO DATE  390                                       248       
  SINCE DEC 1    390                                       248       
  SINCE JUL 1   1069                                       820       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    303                                       204       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   8   RESULTANT WIND DIRECTION   E (80)       
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     N (340)      
  HIGHEST GUST SPEED    45   HIGHEST GUST DIRECTION    SW (210)      
  AVERAGE WIND SPEED     9.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           200 AM                                     
 LOWEST     34           200 PM                                     
 AVERAGE    63                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        66      2000                    
 MINIMUM TEMPERATURE (F)   36        24      2008                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 17 2013......SUNRISE   720 AM PST   SUNSET   451 PM PST   
DECEMBER 18 2013......SUNRISE   721 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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