000 
CDUS41 KLWX 180538
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1233 AM EST THU DEC 18 2003

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 17 2003...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2003

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         49   1244 AM  70    1984  45      4       37       
  MINIMUM         31   1126 PM   3    1989  26      5       25       
  AVERAGE         40                        35      5       31      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.34          0.75 2000   0.10   0.24     0.00    
  MONTH TO DATE    4.17                      1.70   2.47     2.31    
  SINCE DEC 1      4.17                      1.70   2.47     2.31    
  SINCE JAN 1     65.31                     40.43  24.88    36.88    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        T             4.3  1973   0.1   -0.1      0.0     
  MONTH TO DATE   11.4                       0.8   10.6      6.2     
  SINCE DEC 1     11.4                       0.8   10.6      6.2     
  SINCE JUL 1     11.4                       1.7    9.7      6.2     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       25                        29     -4       34       
  MONTH TO DATE  517                       455     62      591       
  SINCE DEC 1    517                       455     62      591       
  SINCE JUL 1   1343                      1432    -89     1573       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    993                      1075    -82     1345       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION    NW (300)      
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION    NW (300)      
  AVERAGE WIND SPEED    10.6                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  LT FREEZING RAIN                                                   
  SNOW                                                               
  LIGHT SNOW                                                         
  SLEET                                                              
  FOG                                                                
  FOG W/VISIBILITY <= 1/4 MILE                                       
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          M400 AM                                     
 LOWEST     47          M700 PM                                     
 AVERAGE    74                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   45        69      1984                    
 MINIMUM TEMPERATURE (F)   25         3      1989                    
                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 18 2003......SUNRISE   723 AM EST   SUNSET   450 PM EST   
DECEMBER 19 2003......SUNRISE   724 AM EST   SUNSET   450 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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