404 
CDUS41 KLWX 310533
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
130 AM EDT THU JUL 31 2003

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 30 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         81    257 PM  98    1988  88     -7       91       
  MINIMUM         63    456 AM  51    1981  64     -1       71       
  AVERAGE         72                        76     -4       81      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             0.66 1970   0.12  -0.12     0.00    
  MONTH TO DATE    6.07                      3.45   2.62     2.65    
  SINCE JUN 1     14.40                      7.52   6.88     6.26    
  SINCE JAN 1     38.49                     24.33  14.16    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        7                        11     -4       16       
  MONTH TO DATE  319                       334    -15      369       
  SINCE JUN 1    484                       537    -53      606       
  SINCE JAN 1    514                       612    -98      734       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     E (70)       
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     E (110)      
  AVERAGE WIND SPEED     4.8                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1200 AM                                     
 LOWEST     54           100 PM                                     
 AVERAGE    77                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88        98      1999                    
 MINIMUM TEMPERATURE (F)   64        50      1997                    
                                                                     
SUNRISE AND SUNSET                                                   
JULY 31 2003..........SUNRISE   609 AM EDT   SUNSET   822 PM EDT   
AUGUST  1 2003........SUNRISE   610 AM EDT   SUNSET   821 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.