000 
CDUS41 KLWX 110531
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
131 AM EDT WED MAY 11 2005

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 10 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         78    357 PM  90    1963  73      5       88       
  MINIMUM         51    531 AM  31    1983  48      3       58       
  AVERAGE         65                        60      5       73      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.61 1990   0.13  -0.13     0.00    
  MONTH TO DATE    0.06                      1.28  -1.22     1.27    
  SINCE MAR 1      8.33                      8.05   0.28     8.36    
  SINCE JAN 1     12.88                     13.87  -0.99    11.70    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0     
  MONTH TO DATE    0.0                       0.0    0.0      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                         6     -6        0       
  MONTH TO DATE  100                        66     34       43       
  SINCE MAR 1   1139                      1098     41      953       
  SINCE JUL 1   4475                      4858   -383     4680       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         1     -1        8       
  MONTH TO DATE    0                        10    -10       25       
  SINCE MAR 1     11                        25    -14       62       
  SINCE JAN 1     11                        25    -14       62       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SE (140)      
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    SE (150)      
  AVERAGE WIND SPEED     6.4                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.1                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    96           600 AM                                     
 LOWEST     42           300 PM                                     
 AVERAGE    69                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        90      1993                    
 MINIMUM TEMPERATURE (F)   48        29      1966                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 11 2005...........SUNRISE   601 AM EDT   SUNSET   812 PM EDT   
MAY 12 2005...........SUNRISE   600 AM EDT   SUNSET   813 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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