000 
CDUS41 KLWX 210543
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
141 AM EDT MON AUG 21 2006

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR AUGUST 20 2006...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2006

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         93    137 PM 104    1983  85      8       90       
  MINIMUM         72    623 AM  47    1976  62     10       71       
  AVERAGE         83                        74      9       81      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             2.17 1963   0.12  -0.12     0.00    
  MONTH TO DATE    1.19                      2.38  -1.19     1.60    
  SINCE JUN 1     15.43                     10.02   5.41    11.37    
  SINCE JAN 1     26.94                     26.83   0.11    29.05    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE JUN 1      4                        22    -18        9       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY       18                         9      9       16       
  MONTH TO DATE  263                       210     53      291       
  SINCE JUN 1    931                       758    173      973       
  SINCE JAN 1   1013                       833    180     1001       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (360)      
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     N (360)      
  AVERAGE WIND SPEED     6.6                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    90           600 AM                                     
 LOWEST     44          1200 PM                                     
 AVERAGE    67                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   85        94      2005                    
 MINIMUM TEMPERATURE (F)   62        47      1976                    
                                                                     
SUNRISE AND SUNSET                                                   
AUGUST 21 2006........SUNRISE   629 AM EDT   SUNSET   756 PM EDT   
AUGUST 22 2006........SUNRISE   630 AM EDT   SUNSET   755 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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