AFOS product CLIAPC
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773 
CDUS46 KMTR 210827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
127 AM PDT SAT SEP 21 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 20 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         80    110 PM  97    2011  79      1       74       
  MINIMUM         42    521 AM  38    2004  49     -7       43       
  AVERAGE         61                        64     -3       59      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.00                                      0.00    
  SINCE JUL 1      0.00                                       T      
  SINCE JAN 1      1.97                                     13.77    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  MONTH TO DATE    0.0                                               
  SINCE SEP 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        4                                         6       
  MONTH TO DATE    5                                        54       
  SINCE SEP 1      5                                        54       
  SINCE JUL 1     41                                       109       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE   60                                        10       
  SINCE SEP 1     60                                        10       
  SINCE JAN 1    297                                       163       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (260)      
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED    10.9                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           400 AM                                     
 LOWEST     45          1200 PM                                     
 AVERAGE    73                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   79       102      2003                    
 MINIMUM TEMPERATURE (F)   48        41      2012                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 21 2013.....SUNRISE   656 AM PDT   SUNSET   707 PM PDT   
SEPTEMBER 22 2013.....SUNRISE   657 AM PDT   SUNSET   706 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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