AFOS product CLIAPC
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CDUS46 KMTR 010837
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1237 AM PST SUN JAN 1 2017


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 31 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         54    125 PM  62    2011  54      0       51       
  MINIMUM         35    548 AM  24    2015  36     -1       24       
  AVERAGE         45                        45      0       38      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    4.20                                      2.78    
  SINCE OCT 1      8.95                                      4.19    
  SINCE JAN 1     23.62                                      8.29    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       20                                        27       
  MONTH TO DATE  545                                       578       
  SINCE DEC 1    545                                       578       
  SINCE JUL 1   1049                                      1119       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    186                                       378       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION  SW (240)      
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (10)       
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     N (10)       
  AVERAGE WIND SPEED     6.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89           600 AM                                     
 LOWEST     54           200 PM                                     
 AVERAGE    72                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   54        63      2014                    
 MINIMUM TEMPERATURE (F)   36        25      2016                    
                                             2014                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY  1 2017.......SUNRISE   726 AM PST   SUNSET   500 PM PST   
JANUARY  2 2017.......SUNRISE   726 AM PST   SUNSET   501 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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