AFOS product CLIAPC
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CDUS46 KMTR 210825
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1225 AM PST SAT DEC 21 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR DECEMBER 20 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2013


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         59    252 PM  67    1999  55      4       60       
  MINIMUM         29    728 AM  25    2008  36     -7       28       
  AVERAGE         44                        45     -1       44      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00                                      0.00    
  MONTH TO DATE    0.47                                      1.85    
  SINCE JUL 1      2.20                                      5.46    
  SINCE JAN 1      4.17                                     19.23    
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       21                                        21       
  MONTH TO DATE  463                                       332       
  SINCE DEC 1    463                                       332       
  SINCE JUL 1   1142                                       904       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1    303                                       204       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   1   RESULTANT WIND DIRECTION   S (190)      
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     N (340)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED     3.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HAZE                                                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    70          1000 PM                                     
 LOWEST     19          1200 AM                                     
 AVERAGE    45                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   55        71      1999                    
 MINIMUM TEMPERATURE (F)   36        21      1998                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 21 2013......SUNRISE   722 AM PST   SUNSET   453 PM PST   
DECEMBER 22 2013......SUNRISE   723 AM PST   SUNSET   453 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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