AFOS product CLIAPC
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CDUS46 KMTR 020826
CLIAPC


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA                      
1226 AM PST WED JAN 2 2013


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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JANUARY 1 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         57    327 PM  62    2012  54      3       62       
  MINIMUM         31   1155 PM  29    1999  36     -5       37       
  AVERAGE         44                        45     -1       50      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T                                         0.00    
  MONTH TO DATE    T                                         0.00    
  SINCE JUL 1      7.79                                      3.58    
  SINCE JAN 1      T                                         0.00    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM                                                 
  MONTH TO DATE   MM                                                 
  SINCE DEC 1      0.0                                               
  SINCE JUL 1      0.0                                               
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       21                                        15       
  MONTH TO DATE   21                                        15       
  SINCE DEC 1    561                                       613       
  SINCE JUL 1   1133                                      1283       
                                                                     
 COOLING                                                             
  YESTERDAY        0                                         0       
  MONTH TO DATE    0                                         0       
  SINCE DEC 1      0                                         0       
  SINCE JAN 1      0                                         0       
..................................................................


WIND (MPH)                                                           
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION  NE (50)       
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     N (10)       
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    NE (60)       
  AVERAGE WIND SPEED     5.7                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.2                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT SNOW                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    85          1200 AM                                     
 LOWEST     30           300 PM                                     
 AVERAGE    58                                                       

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

                                                                     
THE NAPA AIRPORT  CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   54        62      2012                    
 MINIMUM TEMPERATURE (F)   36        23      2000                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY  2 2013.......SUNRISE   726 AM PST   SUNSET   501 PM PST   
JANUARY  3 2013.......SUNRISE   726 AM PST   SUNSET   502 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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