AFOS product CLIAPC
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746 
CDUS46 KMTR 030839
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1239 AM PST WED JAN 3 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 2 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         60    313 PM  67    2014  54      6       54       
  MINIMUM         39    245 AM  23    2000  36      3       40       
  AVERAGE         50                        45      5       47      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.30    
  MONTH TO DATE    0.00                                      0.30    
  SINCE OCT 1      3.03                                      9.25    
  SINCE JAN 1      0.00                                      0.30    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       15                                        18       
  MONTH TO DATE   31                                        38       
  SINCE DEC 1    579                                       583       
  SINCE JUL 1   1107                                      1087       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1      0                                         0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   6   RESULTANT WIND DIRECTION   E (90)       
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     E (90)       
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     E (90)       
  AVERAGE WIND SPEED     6.8                                         

                                                                     
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    93           200 AM                                     
 LOWEST     55           100 PM                                     
 AVERAGE    74                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   54        66      2014                    
 MINIMUM TEMPERATURE (F)   36        26      2009                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY  3 2018.......SUNRISE   726 AM PST   SUNSET   502 PM PST   
JANUARY  4 2018.......SUNRISE   726 AM PST   SUNSET   503 PM PST   

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




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