AFOS product CLIAPC
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CDUS46 KMTR 050827
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
126 AM PDT WED SEP 5 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 4 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         75    333 PM 100    2004  81     -6       82       
  MINIMUM         54   1159 PM  43    2000  51      3       60       
  AVERAGE         65                        66     -1       71      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.00                                      0.00    
  SINCE OCT 1     15.80                                     37.11    
  SINCE JAN 1     12.77                                     28.16    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    6                                         0       
  SINCE SEP 1      6                                         0       
  SINCE JUL 1     47                                        10       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         6       
  MONTH TO DATE    0                                        55       
  SINCE SEP 1      0                                        55       
  SINCE JAN 1    152                                       437       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     S (180)      
  AVERAGE WIND SPEED     8.6                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           200 AM                                     
 LOWEST     57           300 PM                                     
 AVERAGE    79                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   81        99      2008                    
 MINIMUM TEMPERATURE (F)   51        44      2015                    
                                             2010                    
                                             2005                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER  5 2018.....SUNRISE   642 AM PDT   SUNSET   732 PM PDT   
SEPTEMBER  6 2018.....SUNRISE   643 AM PDT   SUNSET   731 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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