AFOS product CLIAPC
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CDUS46 KMTR 220831
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
127 AM PDT SUN SEP 22 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 21 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         71    246 PM 102    2003  79     -8       78       
  MINIMUM         53   1154 PM  41    2012  48      5       41       
  AVERAGE         62                        64     -2       60      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.82                                      0.00    
  MONTH TO DATE    0.82                                      0.00    
  SINCE JUL 1      0.82                                       T      
  SINCE JAN 1      2.79                                     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        3                                         5       
  MONTH TO DATE    8                                        59       
  SINCE SEP 1      8                                        59       
  SINCE JUL 1     44                                       114       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE   60                                        10       
  SINCE SEP 1     60                                        10       
  SINCE JAN 1    297                                       163       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  11   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED    11.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           900 AM                                     
 LOWEST     57           300 PM                                     
 AVERAGE    79                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   79        99      2003                    
 MINIMUM TEMPERATURE (F)   48        40      2005                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 22 2013.....SUNRISE   657 AM PDT   SUNSET   706 PM PDT   
SEPTEMBER 23 2013.....SUNRISE   658 AM PDT   SUNSET   704 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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