AFOS product CLIIAD
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CDUS41 KLWX 050518
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1217 AM EST WED DEC 5 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 4 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         39    202 PM  75    1998  50    -11       39       
  MINIMUM         25   1123 PM  10    1966  29     -4       24       
  AVERAGE         32                        39     -7       32      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.18 1993   0.10  -0.10     0.00    
  MONTH TO DATE    0.32                      0.40  -0.08     0.02    
  SINCE DEC 1      0.32                      0.40  -0.08     0.02    
  SINCE JAN 1     25.35                     39.13 -13.78    44.26    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       T      0.0              
  MONTH TO DATE    0.0                       T      0.0              
  SINCE JUL 1      0.0                       0.9   -0.9              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       33                        25      8       33       
  MONTH TO DATE  111                        99     12       91       
  SINCE DEC 1    111                        99     12       91       
  SINCE JUL 1    840                      1076   -236      952       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1593                      1075    518     1256       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    32   HIGHEST WIND DIRECTION    NW (310)      
  HIGHEST GUST SPEED    46   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED    14.1                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    58          1000 PM                                     
 LOWEST     33           100 PM                                     
 AVERAGE    46                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   49        77      2001                    
 MINIMUM TEMPERATURE (F)   29        12      1966                    

                                                                      
SUNRISE AND SUNSET                                                   
DECEMBER  5 2007......SUNRISE   713 AM EST   SUNSET   447 PM EST   
DECEMBER  6 2007......SUNRISE   714 AM EST   SUNSET   447 PM EST   

                                                                     
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

 


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