AFOS product CLIAPC
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CDUS46 KMTR 130849
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
149 AM PDT MON MAY 13 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 12 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         82R   306 PM  79    2002  72     10       77       
  MINIMUM         45    436 AM  37    2009  45      0       44       
  AVERAGE         64                        58      6       61      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.05                                      0.01    
  SINCE JUL 1      9.54                                     17.28    
  SINCE JAN 1      1.75                                     13.70    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  MONTH TO DATE    0.0                                               
  SINCE MAR 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        1                                         4       
  MONTH TO DATE   28                                        58       
  SINCE MAR 1    567                                       741       
  SINCE JUL 1   2772                                      3005       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    9                                         6       
  SINCE MAR 1     12                                        13       
  SINCE JAN 1     12                                        13       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION  SW (220)      
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (230)      
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     7.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.1                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           400 AM                                     
 LOWEST     36           500 PM                                     
 AVERAGE    65                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   72        87      2008                    
 MINIMUM TEMPERATURE (F)   45        37      1999                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 13 2013...........SUNRISE   600 AM PDT   SUNSET   812 PM PDT   
MAY 14 2013...........SUNRISE   559 AM PDT   SUNSET   813 PM PDT   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




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