AFOS product CLIAPC
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CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1241 AM PST TUE DEC 27 2016


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 26 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         58    226 PM  67    2013  54      4       57       
  MINIMUM         29    741 AM  24    2011  36     -7       29       
  AVERAGE         44                        45     -1       43      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    4.20                                      2.76    
  SINCE OCT 1      8.95                                      4.17    
  SINCE JAN 1     23.62                                      8.27    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       21                                        22       
  MONTH TO DATE  450                                       445       
  SINCE DEC 1    450                                       445       
  SINCE JUL 1    954                                       986       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    186                                       378       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   3   RESULTANT WIND DIRECTION   E (90)       
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     E (90)       
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     E (90)       
  AVERAGE WIND SPEED     3.5                                         

                                                                     
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    85           600 AM                                     
 LOWEST     30           300 PM                                     
 AVERAGE    58                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   54        67      1999                    
 MINIMUM TEMPERATURE (F)   36        25      2015                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 27 2016......SUNRISE   725 AM PST   SUNSET   456 PM PST   
DECEMBER 28 2016......SUNRISE   725 AM PST   SUNSET   457 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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