000 
CDUS41 KLWX 210540
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
138 AM EDT THU APR 21 2005

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR APRIL 20 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         86    402 PM  88    1985  67     19       80       
  MINIMUM         50    533 AM  28    1974  41      9       61       
  AVERAGE         68                        54     14       71      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.46 1964   0.11  -0.11     0.08    
  MONTH TO DATE    2.61                      2.09   0.52     3.60    
  SINCE MAR 1      6.54                      5.64   0.90     5.65    
  SINCE JAN 1     11.09                     11.46  -0.37     8.99    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           T    1983   0.0    0.0      0.0     
  MONTH TO DATE    0.0                       0.4   -0.4      0.0     
  SINCE MAR 1      1.2                       3.8   -2.6       T      
  SINCE JUL 1     17.3                      21.2   -3.9     17.4     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                        11    -11        0       
  MONTH TO DATE  197                       270    -73      288       
  SINCE MAR 1    941                       940      1      862       
  SINCE JUL 1   4277                      4700   -423     4589       
                                                                     
 COOLING                                                             
  YESTERDAY        3                         1      2        6       
  MONTH TO DATE   11                         1     10       22       
  SINCE MAR 1     11                         5      6       22       
  SINCE JAN 1     11                         5      6       22       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED     5.4                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
  HAZE                                                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    89           500 AM                                     
 LOWEST     23           500 PM                                     
 AVERAGE    56                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   68        89      1985                    
 MINIMUM TEMPERATURE (F)   42        29      1983                    
                                                                     
SUNRISE AND SUNSET                                                   
APRIL 21 2005.........SUNRISE   625 AM EDT   SUNSET   753 PM EDT   
APRIL 22 2005.........SUNRISE   623 AM EDT   SUNSET   754 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          


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