AFOS product CLIIAD
Dates interpreted at 00:00 UTC
Download date range (UTC midnight)
Bulk Download
000 
CDUS41 KLWX 180535
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
135 AM EDT SAT SEP 18 2004

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 17 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         81    233 PM  97    1991  79      2       78       
  MINIMUM         68    624 AM  35    1986  56     12       54       
  AVERAGE         75                        67      8       66      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        1.71R         0.90 1987   0.13   1.58     0.00    
  MONTH TO DATE    3.51                      2.21   1.30     2.59    
  SINCE SEP 1      3.51                      2.21   1.30     2.59    
  SINCE JAN 1     28.25                     30.44  -2.19    46.64    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           0.0  2002   0.0    0.0      0.0     
                                      2001                          
  MONTH TO DATE    0.0                       0.0    0.0      0.0     
  SINCE SEP 1      0.0                       0.0    0.0      0.0     
  SINCE JUL 1      0.0                       0.0    0.0      0.0     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE    0                        14    -14        8       
  SINCE SEP 1      0                        14    -14        8       
  SINCE JUL 1      2                        19    -17        8       
                                                                     
 COOLING                                                             
  YESTERDAY       10                         4      6        1       
  MONTH TO DATE  109                        94     15       70       
  SINCE SEP 1    109                        94     15       70       
  SINCE JAN 1   1168                      1019    149      949       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED     5.8                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  THUNDERSTORM                                                       
  HEAVY RAIN                                                         
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                
  HAZE                                                               
  TORNADO                                                            
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    97           100 AM                                     
 LOWEST     74           300 PM                                     
 AVERAGE    86                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   78        91      1978                    
 MINIMUM TEMPERATURE (F)   55        37      1990                    
                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 18 2004.....SUNRISE   654 AM EDT   SUNSET   713 PM EDT   
SEPTEMBER 19 2004.....SUNRISE   655 AM EDT   SUNSET   711 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          


$$