AFOS product CLIAPC
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077 
CDUS46 KMTR 210852
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
152 AM PDT MON SEP 21 2015


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 20 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         95    251 PM  97    2011  79     16       77       
  MINIMUM         50    506 AM  38    2004  49      1       58       
  AVERAGE         73                        64      9       68      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.06                                      0.04    
  SINCE OCT 1     16.49                                      9.74    
  SINCE JAN 1      4.10                                      8.38    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE   20                                         6       
  SINCE SEP 1     20                                         6       
  SINCE JUL 1     26                                        28       
                                                                     
 COOLING                                                             
  YESTERDAY        8                                         3       
  MONTH TO DATE   64                                        48       
  SINCE SEP 1     64                                        48       
  SINCE JAN 1    327                                       221       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   2   RESULTANT WIND DIRECTION   S (200)      
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     E (90)       
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     E (80)       
  AVERAGE WIND SPEED     3.7                                         

                                                                     
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    89           600 AM                                     
 LOWEST     18          1200 PM                                     
 AVERAGE    54                                                       

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

                                                                     
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 2015.....SUNRISE   656 AM PDT   SUNSET   708 PM PDT   
SEPTEMBER 22 2015.....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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