AFOS product CLIAPC
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CDUS46 KMTR 190826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1226 AM PST THU DEC 19 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 18 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         59    109 PM  62    2003  55      4       54       
  MINIMUM         33    600 AM  21    2006  36     -3       31       
  AVERAGE         46                        45      1       43      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.47                                      1.85    
  SINCE JUL 1      2.20                                      5.46    
  SINCE JAN 1      4.17                                     19.23    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       19                                        22       
  MONTH TO DATE  424                                       285       
  SINCE DEC 1    424                                       285       
  SINCE JUL 1   1103                                       857       
                                                                     
 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   S (200)      
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     S (180)      
  AVERAGE WIND SPEED     5.3                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1000 PM                                     
 LOWEST     51           100 PM                                     
 AVERAGE    76                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        78      1999                    
 MINIMUM TEMPERATURE (F)   36        21      2006                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 19 2013......SUNRISE   721 AM PST   SUNSET   452 PM PST   
DECEMBER 20 2013......SUNRISE   722 AM PST   SUNSET   452 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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