AFOS product CLIAPC
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CDUS46 KMTR 100827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
127 AM PDT MON SEP 10 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 9 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         81    257 PM  99    2015  81      0       MM       
  MINIMUM         49    547 AM  43    2002  51     -2       MM       
  AVERAGE         65                        66     -1       MM      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    T                                          T      
  SINCE OCT 1     15.80                                     37.11    
  SINCE JAN 1     12.77                                     28.16    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                                        MM       
  MONTH TO DATE   11                                         0       
  SINCE SEP 1     11                                         0       
  SINCE JUL 1     52                                        10       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                        MM       
  MONTH TO DATE    0                                        78       
  SINCE SEP 1      0                                        78       
  SINCE JAN 1    152                                       460       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION  SW (210)      
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     7.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           400 AM                                     
 LOWEST     39           200 PM                                     
 AVERAGE    66                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   81        96      2017                    
 MINIMUM TEMPERATURE (F)   50        40      2005                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 10 2018.....SUNRISE   647 AM PDT   SUNSET   725 PM PDT   
SEPTEMBER 11 2018.....SUNRISE   647 AM PDT   SUNSET   723 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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