652 
CDUS41 KLWX 120535
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
131 AM EDT WED MAY 12 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 11 2004...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2004

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         87    332 PM  90    1993  73     14       82       
  MINIMUM         66    553 AM  29    1966  48     18       61       
  AVERAGE         77                        61     16       72      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.74 1981   0.14  -0.14      T      
  MONTH TO DATE    1.27                      1.42  -0.15     2.09    
  SINCE MAR 1      8.37                      8.19   0.18     8.51    
  SINCE JAN 1     11.71                     14.01  -2.30    17.47    
                                                                     
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      T                         3.8   -3.8      1.9     
  SINCE JUL 1     17.4                      21.2   -3.8     50.1     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         5     -5        0       
  MONTH TO DATE   42                        71    -29       47       
  SINCE MAR 1    952                      1103   -151     1035       
  SINCE JUL 1   4677                      4836   -159     5079       
                                                                     
 COOLING                                                             
  YESTERDAY       12                         1     11        7       
  MONTH TO DATE   37                        11     26       20       
  SINCE MAR 1     74                        26     48       28       
  SINCE JAN 1     74                        26     48       28       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED     4.8                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
  HAZE                                                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93          M500 AM                                     
 LOWEST     43          M300 PM                                     
 AVERAGE    68                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   73        89      1991                    
 MINIMUM TEMPERATURE (F)   49        34      1969                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 12 2004...........SUNRISE   600 AM EDT   SUNSET   813 PM EDT   
MAY 13 2004...........SUNRISE   559 AM EDT   SUNSET   814 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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