AFOS product CLIAPC
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CDUS46 KMTR 230840
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1239 AM PST WED DEC 23 2015


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 22 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         62   1250 PM  68    1999  55      7       63       
  MINIMUM         47   1159 PM  19    1998  36     11       47       
  AVERAGE         55                        45     10       55      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.05                                      0.00    
  MONTH TO DATE    2.66                                     10.14    
  SINCE OCT 1      4.07                                     12.39    
  SINCE JAN 1      8.17                                     21.04    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       10                                        10       
  MONTH TO DATE  357                                       232       
  SINCE DEC 1    357                                       232       
  SINCE JUL 1    898                                       705       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    378                                       267       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED  16   RESULTANT WIND DIRECTION   W (260)      
  HIGHEST WIND SPEED    32   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED    16.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1200 AM                                     
 LOWEST     78          1200 PM                                     
 AVERAGE    89                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        66      2004                    
 MINIMUM TEMPERATURE (F)   36        20      2011                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 23 2015......SUNRISE   723 AM PST   SUNSET   453 PM PST   
DECEMBER 24 2015......SUNRISE   723 AM PST   SUNSET   454 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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