AFOS product CLIAPC
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CDUS46 KMTR 140839
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
139 AM PDT FRI SEP 14 2018


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR SEPTEMBER 13 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         76    322 PM 100    2003  80     -4       75       
  MINIMUM         48   1143 PM  46    2002  50     -2       63       
  AVERAGE         62                        65     -3       69      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    T                                         0.02    
  SINCE OCT 1     15.80                                     37.13    
  SINCE JAN 1     12.77                                     28.18    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        3                                         0       
  MONTH TO DATE   19                                         0       
  SINCE SEP 1     19                                         0       
  SINCE JUL 1     60                                        10       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         4       
  MONTH TO DATE    0                                       115       
  SINCE SEP 1      0                                       115       
  SINCE JAN 1    152                                       497       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   8   RESULTANT WIND DIRECTION  SW (230)      
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED     8.3                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89          1100 PM                                     
 LOWEST     38           200 PM                                     
 AVERAGE    64                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   80        89      2004                    
 MINIMUM TEMPERATURE (F)   50        46      2001                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 14 2018.....SUNRISE   650 AM PDT   SUNSET   718 PM PDT   
SEPTEMBER 15 2018.....SUNRISE   651 AM PDT   SUNSET   717 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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