000 
CDUS41 KLWX 190552
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
148 AM EDT TUE SEP 19 2006

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 18 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         84    234 PM  91    1978  78      6       84       
  MINIMUM         58    451 AM  37    1990  55      3       62       
  AVERAGE         71                        67      4       73      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.76 2003   0.13  -0.13     0.00    
  MONTH TO DATE    6.42                      2.34   4.08     0.01    
  SINCE SEP 1      6.42                      2.34   4.08     0.01    
  SINCE JAN 1     33.41                     30.57   2.84    29.78    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                                               
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE    5                        16    -11        0       
  SINCE SEP 1      5                        16    -11        0       
  SINCE JUL 1      5                        21    -16        0       
                                                                     
 COOLING                                                             
  YESTERDAY        6                         4      2        8       
  MONTH TO DATE   58                        98    -40      153       
  SINCE SEP 1     58                        98    -40      153       
  SINCE JAN 1   1219                      1023    196     1264       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SE (150)      
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SW (210)      
  AVERAGE WIND SPEED     4.3                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    96           400 AM                                     
 LOWEST     47           200 PM                                     
 AVERAGE    72                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   78        93      1978                    
                                             1977                    
 MINIMUM TEMPERATURE (F)   55        36      1984                    
                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 19 2006.....SUNRISE   655 AM EDT   SUNSET   712 PM EDT   
SEPTEMBER 20 2006.....SUNRISE   656 AM EDT   SUNSET   710 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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