AFOS product CLIIAD
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CDUS41 KLWX 130522
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
122 AM EDT FRI JUL 13 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JULY 12 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    415 PM  97    1986  87     -1       91       
  MINIMUM         64    518 AM  47    2002  64      0       72       
  AVERAGE         75                        76     -1       82      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          2.61 1990   0.12  -0.12     0.24    
  MONTH TO DATE    0.76                      1.44  -0.68     1.28    
  SINCE JUN 1      3.68                      5.51  -1.83    13.07    
  SINCE JAN 1     14.98                     22.32  -7.34    24.58    
                                                                     
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       10                        11     -1       17       
  MONTH TO DATE  134                       125      9      136       
  SINCE JUN 1    425                       328     97      375       
  SINCE JAN 1    576                       403    173      457       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NW (330)      
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     E (100)      
  AVERAGE WIND SPEED     6.5                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    78           400 AM                                     
 LOWEST     28           100 PM                                     
 AVERAGE    53                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   87        97      1986                    
                                             1966                    
 MINIMUM TEMPERATURE (F)   64        52      1978                    

                                                                      
SUNRISE AND SUNSET                                                   
JULY 13 2007..........SUNRISE   555 AM EDT   SUNSET   836 PM EDT   
JULY 14 2007..........SUNRISE   556 AM EDT   SUNSET   835 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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