AFOS product CLIIAD
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CDUS41 KLWX 300521
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
120 AM EDT MON JUL 30 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 29 2007...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2007


 WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         86   1159 AM  97    1993  88     -2       92       
  MINIMUM         71   1130 PM  53    1978  64      7       72       
                                      1977                          
  AVERAGE         79                        76      3       82      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.54          0.92 2001   0.11   0.43     0.00    
  MONTH TO DATE    1.66                      3.33  -1.67     2.45    
  SINCE JUN 1      4.58                      7.40  -2.82    14.24    
  SINCE JAN 1     15.88                     24.21  -8.33    25.75    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.0    0.0              
  MONTH TO DATE    0.0                       0.0    0.0              
  SINCE JUL 1      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      3                        22    -19        4       
  SINCE JUL 1      0                         1     -1        0       
                                                                     
 COOLING                                                             
  YESTERDAY       14                        12      2       17       
  MONTH TO DATE  359                       323     36      391       
  SINCE JUN 1    650                       526    124      630       
  SINCE JAN 1    801                       601    200      712       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (350)      
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     E (70)       
  AVERAGE WIND SPEED     5.0                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  THUNDERSTORM                                                       
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    87           300 PM                                     
 LOWEST     61          1200 PM                                     
 AVERAGE    74                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88        98      1988                    
 MINIMUM TEMPERATURE (F)   64        51      1981                    

                                                                      
SUNRISE AND SUNSET                                                   
JULY 30 2007..........SUNRISE   609 AM EDT   SUNSET   823 PM EDT   
JULY 31 2007..........SUNRISE   609 AM EDT   SUNSET   822 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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