AFOS product CLIAPC
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421 
CDUS46 KMTR 191245
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
445 AM PST FRI JAN 19 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 18 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         57    329 PM  70    2014  55      2       54       
                                      2009                          
  MINIMUM         48   1107 PM  24    2001  37     11       46       
  AVERAGE         53                        46      7       50      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.15                                      1.43    
  MONTH TO DATE    2.70                                      9.17    
  SINCE OCT 1      5.73                                     18.12    
  SINCE JAN 1      2.70                                      9.17    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       12                                        15       
  MONTH TO DATE  247                                       300       
  SINCE DEC 1    795                                       845       
  SINCE JUL 1   1323                                      1349       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1      0                                         0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION  SW (240)      
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     W (260)      
  AVERAGE WIND SPEED     5.3                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 1.0                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           400 AM                                     
 LOWEST     86          1000 PM                                     
 AVERAGE    93                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        70      2014                    
 MINIMUM TEMPERATURE (F)   37        24      2007                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 19 2018.......SUNRISE   723 AM PST   SUNSET   517 PM PST   
JANUARY 20 2018.......SUNRISE   722 AM PST   SUNSET   519 PM PST   

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




$$