AFOS product CLIAPC
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524 
CDUS46 KMTR 230045
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
544 PM PDT WED AUG 22 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR AUGUST 22 2018...
VALID TODAY AS OF 0500 PM LOCAL TIME.

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)                                                     
 TODAY                                                               
  MAXIMUM         73    341 PM  97    1999  80     -7       81       
  MINIMUM         62    611 AM  45    2006  52     10       56       
  AVERAGE         68                        66      2       69      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.00                                      0.00    
  MONTH TO DATE    0.00                                       T      
  SINCE OCT 1     15.80                                     37.11    
  SINCE JAN 1     12.77                                     28.16    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY            0                                         0       
  MONTH TO DATE   12                                         2       
  SINCE JUN 1     87                                        27       
  SINCE JUL 1     29                                        10       
                                                                     
 COOLING                                                             
  TODAY            3                                         4       
  MONTH TO DATE   43                                        72       
  SINCE JUN 1    149                                       306       
  SINCE JAN 1    154                                       340       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   9   RESULTANT WIND DIRECTION  SW (220)      
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED    10.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED TODAY.                            
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    78          1200 AM                                     
 LOWEST     57           100 PM                                     
 AVERAGE    68                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   81        96      2010                    
 MINIMUM TEMPERATURE (F)   52        45      2005                    

                                                                     
SUNRISE AND SUNSET                                                   
AUGUST 22 2018........SUNRISE   630 AM PDT   SUNSET   753 PM PDT   
AUGUST 23 2018........SUNRISE   631 AM PDT   SUNSET   752 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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