AFOS product CLIIAD
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CDUS41 KLWX 290525
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1223 AM EST SAT DEC 29 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 28 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         48    443 PM  73    1984  43      5       49       
  MINIMUM         27    802 AM   8    1966  24      3       26       
  AVERAGE         38                        33      5       38      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.28          1.74 1967   0.10   0.18     0.00    
  MONTH TO DATE    2.75                      2.77  -0.02     1.66    
  SINCE DEC 1      2.75                      2.77  -0.02     1.66    
  SINCE JAN 1     27.78                     41.50 -13.72    45.90    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.1   -0.1              
  MONTH TO DATE    2.5                       1.9    0.6              
  SINCE JUL 1      2.5                       2.8   -0.3              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       27                        31     -4       27       
  MONTH TO DATE  748                       788    -40      635       
  SINCE DEC 1    748                       788    -40      635       
  SINCE JUL 1   1477                      1765   -288     1496       
                                                                     
 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    10   HIGHEST WIND DIRECTION    SE (130)      
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SW (240)      
  AVERAGE WIND SPEED     2.7                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93          1000 PM                                     
 LOWEST     54           200 PM                                     
 AVERAGE    74                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   43        78      1984                    
 MINIMUM TEMPERATURE (F)   23         7      1977                    

                                                                      
SUNRISE AND SUNSET                                                   
DECEMBER 29 2007......SUNRISE   728 AM EST   SUNSET   456 PM EST   
DECEMBER 30 2007......SUNRISE   728 AM EST   SUNSET   456 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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