AFOS product CLIIAD
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CDUS41 KLWX 010545
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
142 AM EDT SUN AUG 1 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 31 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         89    457 PM  98    1999  88      1       80       
  MINIMUM         75    531 AM  50    1997  64     11       68       
  AVERAGE         82                        76      6       74      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.87 1978   0.12  -0.12      T      
  MONTH TO DATE    3.73                      3.57   0.16     6.06    
  SINCE JUN 1      7.46                      7.64  -0.18    14.39    
  SINCE JAN 1     20.96                     24.45  -3.49    38.48    
                                                                     
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     12                        22    -10       31       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY       17                        11      6        9       
  MONTH TO DATE  344                       345     -1      328       
  SINCE JUN 1    541                       548     -7      493       
  SINCE JAN 1    781                       623    158      523       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     S (190)      
  AVERAGE WIND SPEED    10.0                                         
                                                                     
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    91          1100 PM                                     
 LOWEST     52           400 PM                                     
 AVERAGE    72                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88       100      1980                    
 MINIMUM TEMPERATURE (F)   64        54      1997                    
                                                                     
SUNRISE AND SUNSET                                                   
AUGUST  1 2004........SUNRISE   611 AM EDT   SUNSET   821 PM EDT   
AUGUST  2 2004........SUNRISE   612 AM EDT   SUNSET   820 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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