AFOS product CLIIAD
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CDUS41 KLWX 290524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
123 AM EDT SAT SEP 29 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 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         79    244 PM  86    1998  75      4       78       
  MINIMUM         60   1159 PM  34    1989  50     10       56       
  AVERAGE         70                        63      7       67      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.61 2004   0.12  -0.12     0.67    
  MONTH TO DATE    1.40                      3.58  -2.18     7.09    
  SINCE SEP 1      1.40                      3.58  -2.18     7.09    
  SINCE JAN 1     19.04                     31.81 -12.77    34.08    
                                                                     
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                         5     -5        0       
  MONTH TO DATE   26                        50    -24       35       
  SINCE SEP 1     26                        50    -24       35       
  SINCE JUL 1     26                        55    -29       35       
                                                                     
 COOLING                                                             
  YESTERDAY        5                         2      3        2       
  MONTH TO DATE  220                       128     92       80       
  SINCE SEP 1    220                       128     92       80       
  SINCE JAN 1   1485                      1053    432     1241       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED     8.3                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              

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

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           200 AM                                     
 LOWEST     30           300 PM                                     
 AVERAGE    62                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   74        85      1986                    
                                             1973                    
 MINIMUM TEMPERATURE (F)   50        34      1978                    

                                                                      
SUNRISE AND SUNSET                                                   
SEPTEMBER 29 2007.....SUNRISE   704 AM EDT   SUNSET   656 PM EDT   
SEPTEMBER 30 2007.....SUNRISE   704 AM EDT   SUNSET   655 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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