AFOS product CLIAPC
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153 
CDUS46 KMTR 170845
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
145 AM PDT TUE SEP 17 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 16 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    143 PM  85    2004  80      0       75       
  MINIMUM         52    351 AM  38    2006  49      3       43       
  AVERAGE         66                        65      1       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        0                                         6       
  MONTH TO DATE    1                                        32       
  SINCE SEP 1      1                                        32       
  SINCE JUL 1     37                                        87       
                                                                     
 COOLING                                                             
  YESTERDAY        1                                         0       
  MONTH TO DATE   55                                        10       
  SINCE SEP 1     55                                        10       
  SINCE JAN 1    292                                       163       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION  SW (220)      
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED     8.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.2                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           500 AM                                     
 LOWEST     42           500 PM                                     
 AVERAGE    71                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   80        94      2000                    
 MINIMUM TEMPERATURE (F)   49        42      2006                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 17 2013.....SUNRISE   653 AM PDT   SUNSET   713 PM PDT   
SEPTEMBER 18 2013.....SUNRISE   654 AM PDT   SUNSET   712 PM PDT   

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




$$