AFOS product CLIIAD
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CDUS41 KLWX 310533
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1231 AM EST FRI DEC 31 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 30 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         49    243 PM  67    1990  42      7       54       
  MINIMUM         28    714 AM   4    1963  23      5       27       
  AVERAGE         39                        33      6       41      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.87 1969   0.10  -0.10     0.03    
  MONTH TO DATE    3.00                      2.97   0.03     4.57    
  SINCE DEC 1      3.00                      2.97   0.03     4.57    
  SINCE JAN 1     38.70                     41.70  -3.00    65.71    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.9  1977   0.1   -0.1      0.0     
  MONTH TO DATE    T                         2.1   -2.1     11.4     
  SINCE DEC 1      T                         2.1   -2.1     11.4     
  SINCE JUL 1      T                         3.0   -3.0     11.4     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       26                        32     -6       24       
  MONTH TO DATE  821                       852    -31      864       
  SINCE DEC 1    821                       852    -31      864       
  SINCE JUL 1   1626                      1829   -203     1690       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1201                      1075    126      993       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION     S (170)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (160)      
  AVERAGE WIND SPEED     2.4                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
  HAZE                                                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           700 AM                                     
 LOWEST     54           200 PM                                     
 AVERAGE    73                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   42        73      1992                    
 MINIMUM TEMPERATURE (F)   23         1      1993                    
                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 31 2004......SUNRISE   728 AM EST   SUNSET   458 PM EST   
JANUARY  1 2005.......SUNRISE   729 AM EST   SUNSET   459 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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