000 
CDUS41 KLWX 180539
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
138 AM EDT WED MAY 18 2005

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 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         67    514 PM  89    1986  75     -8       82       
  MINIMUM         50   1159 PM  30    1984  50      0       64       
  AVERAGE         59                        63     -4       73      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.22 1970   0.14  -0.14     0.01    
  MONTH TO DATE    1.38                      2.26  -0.88     1.98    
  SINCE MAR 1      9.65                      9.03   0.62     9.07    
  SINCE JAN 1     14.20                     14.85  -0.65    12.41    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.0  2002   0.0    0.0      0.0     
                                      2001                          
  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        6                         4      2        0       
  MONTH TO DATE  117                        99     18       43       
  SINCE MAR 1   1156                      1131     25      953       
  SINCE JUL 1   4492                      4891   -399     4680       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         2     -2        8       
  MONTH TO DATE   15                        20     -5       98       
  SINCE MAR 1     26                        35     -9      135       
  SINCE JAN 1     26                        35     -9      135       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     N (360)      
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     N (10)       
  AVERAGE WIND SPEED     3.6                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    83          1000 PM                                     
 LOWEST     40           100 PM                                     
 AVERAGE    62                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   75        91      1987                    
 MINIMUM TEMPERATURE (F)   51        33      1973                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 18 2005...........SUNRISE   554 AM EDT   SUNSET   818 PM EDT   
MAY 19 2005...........SUNRISE   554 AM EDT   SUNSET   819 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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