AFOS product CLIAPC
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CDUS46 KMTR 180845
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
145 AM PDT SAT MAY 18 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 17 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         73   1206 PM  95    2009  73      0       72       
  MINIMUM         45    522 AM  41    1999  46     -1       50       
  AVERAGE         59                        59      0       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        6                                         4       
  MONTH TO DATE   44                                        87       
  SINCE MAR 1    583                                       770       
  SINCE JUL 1   2788                                      3034       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    9                                         6       
  SINCE MAR 1     12                                        13       
  SINCE JAN 1     12                                        13       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  10   RESULTANT WIND DIRECTION   W (250)      
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (250)      
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED    10.4                                         

                                                                     
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    93           500 AM                                     
 LOWEST     34           100 PM                                     
 AVERAGE    64                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        81      2001                    
 MINIMUM TEMPERATURE (F)   46        40      2007                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 18 2013...........SUNRISE   556 AM PDT   SUNSET   816 PM PDT   
MAY 19 2013...........SUNRISE   555 AM PDT   SUNSET   817 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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