171 
CDUS41 KLWX 280531
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
129 AM EDT MON JUL 28 2003

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 27 2003...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2003

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         90    234 PM  98    1993  88      2       83       
  MINIMUM         71    515 AM  52    1977  65      6       68       
  AVERAGE         81                        76      5       76      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          3.50 1994   0.11  -0.11     0.15    
  MONTH TO DATE    5.23                      3.11   2.12     2.65    
  SINCE JUN 1     13.56                      7.18   6.38     6.26    
  SINCE JAN 1     37.65                     23.99  13.66    19.63    
                                                                     
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 JUN 1      0.0                       0.0    0.0      0.0     
  SINCE JUL 1      0.0                       0.0    0.0      0.0     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         1     -1        0       
  SINCE JUN 1     31                        22      9        2       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY       16                        12      4       11       
  MONTH TO DATE  293                       299     -6      316       
  SINCE JUN 1    458                       502    -44      553       
  SINCE JAN 1    488                       577    -89      681       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     8.3                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  THUNDERSTORM                                                       
  FOG                                                                
  HAZE                                                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    90           400 AM                                     
 LOWEST     56           200 PM                                     
 AVERAGE    73                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88        99      1993                    
 MINIMUM TEMPERATURE (F)   65        47      1977                    
                                                                     
SUNRISE AND SUNSET                                                   
JULY 28 2003..........SUNRISE   607 AM EDT   SUNSET   825 PM EDT   
JULY 29 2003..........SUNRISE   608 AM EDT   SUNSET   824 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.