AFOS product CLIIAD
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CDUS41 KLWX 200531
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1230 AM EST TUE DEC 20 2005

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 19 2005...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2005

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         39    120 PM  63    1967  45     -6       46       
  MINIMUM         24   1159 PM  -2    1989  25     -1       17       
  AVERAGE         32                        35     -3       32      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.86 1995   0.10  -0.10     0.01    
  MONTH TO DATE    2.14                      1.90   0.24     1.70    
  SINCE DEC 1      2.14                      1.90   0.24     1.70    
  SINCE JAN 1     43.77                     40.63   3.14    37.40    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           3.1  2000   0.1   -0.1       T      
  MONTH TO DATE    5.7                       1.0    4.7       T      
  SINCE DEC 1      5.7                       1.0    4.7       T      
  SINCE JUL 1      6.0                       1.9    4.1       T      
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       33                        29      4       33       
  MONTH TO DATE  635                       513    122      452       
  SINCE DEC 1    635                       513    122      452       
  SINCE JUL 1   1374                      1490   -116     1257       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1373                      1075    298     1201       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED     5.9                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           200 AM                                     
 LOWEST     38           400 PM                                     
 AVERAGE    65                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   45        64      1988                    
 MINIMUM TEMPERATURE (F)   25         8      1991                    
                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 20 2005......SUNRISE   724 AM EST   SUNSET   451 PM EST   
DECEMBER 21 2005......SUNRISE   725 AM EST   SUNSET   451 PM EST   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          


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