AFOS product CLIIAD
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CDUS41 KLWX 230521
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
120 AM EDT SUN SEP 23 2007


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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 22 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         89    427 PM  94    1980  77     12       70       
                                      1970                          
  MINIMUM         71   1159 PM  38    1997  53     18       46       
                                      1991                          
  AVERAGE         80                        65     15       58      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.57 1982   0.13  -0.13     0.00    
  MONTH TO DATE    0.81                      2.86  -2.05     6.42    
  SINCE SEP 1      0.81                      2.86  -2.05     6.42    
  SINCE JAN 1     18.45                     31.09 -12.64    33.41    
                                                                     
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                         3     -3        7       
  MONTH TO DATE   26                        27     -1       29       
  SINCE SEP 1     26                        27     -1       29       
  SINCE JUL 1     26                        32     -6       29       
                                                                     
 COOLING                                                             
  YESTERDAY       15                         3     12        0       
  MONTH TO DATE  167                       112     55       62       
  SINCE SEP 1    167                       112     55       62       
  SINCE JAN 1   1432                      1037    395     1223       
..................................................................


 WIND (MPH)                                                           
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     S (180)      
  HIGHEST GUST SPEED    MM   HIGHEST GUST DIRECTION    MM            
  AVERAGE WIND SPEED     4.9                                         

                                                                      
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              

                                                                      
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                      
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    90           400 AM                                     
 LOWEST     43           400 PM                                     
 AVERAGE    67                                                       

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

                                                                      
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   77        93      2005                    
 MINIMUM TEMPERATURE (F)   53        33      1983                    

                                                                      
SUNRISE AND SUNSET                                                   
SEPTEMBER 23 2007.....SUNRISE   658 AM EDT   SUNSET   706 PM EDT   
SEPTEMBER 24 2007.....SUNRISE   659 AM EDT   SUNSET   704 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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