000 
CDUS41 KLWX 180531
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
130 AM EDT MON APR 18 2005

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR APRIL 17 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         74    357 PM  93    2002  67      7       82       
  MINIMUM         31    547 AM  27    1983  41    -10       41       
  AVERAGE         53                        54     -1       62      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.44 2000   0.10  -0.10     0.00    
  MONTH TO DATE    2.61                      1.76   0.85     3.52    
  SINCE MAR 1      6.54                      5.31   1.23     5.57    
  SINCE JAN 1     11.09                     11.13  -0.04     8.91    
                                                                     
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       12                        12      0        3       
  MONTH TO DATE  194                       237    -43      288       
  SINCE MAR 1    938                       907     31      862       
  SINCE JUL 1   4274                      4667   -393     4589       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    7                         0      7        0       
  SINCE MAR 1      7                         4      3        0       
  SINCE JAN 1      7                         4      3        0       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    SW (230)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     2.6                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    82           500 AM                                     
 LOWEST     13           400 PM                                     
 AVERAGE    48                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   67        90      1976                    
 MINIMUM TEMPERATURE (F)   41        31      1996                    
                                                                     
SUNRISE AND SUNSET                                                   
APRIL 18 2005.........SUNRISE   629 AM EDT   SUNSET   750 PM EDT   
APRIL 19 2005.........SUNRISE   627 AM EDT   SUNSET   751 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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