315 
CDUS41 KLWX 130534
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
130 AM EDT TUE MAY 13 2003

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 12 2003...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2003

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         68   1207 AM  89    1991  73     -5       84       
  MINIMUM         54   1159 PM  34    1969  49      5       58       
  AVERAGE         61                        61      0       71      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.37 1974   0.14  -0.14     0.13    
  MONTH TO DATE    2.11                      1.56   0.55     1.21    
  SINCE MAR 1      8.53                      8.33   0.20     8.14    
  SINCE JAN 1     17.49                     14.15   3.34     9.83    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0     
  MONTH TO DATE    0.0                       0.0    0.0      0.0     
  SINCE MAR 1      1.9                       3.8   -1.9      0.0     
  SINCE JUL 1     50.1                      21.2   28.9      2.6     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        4                         5     -1        0       
  MONTH TO DATE   51                        76    -25       58       
  SINCE MAR 1   1039                      1108    -69      955       
  SINCE JUL 1   5083                      4841    242     4004       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         1     -1        6       
  MONTH TO DATE   20                        12      8       17       
  SINCE MAR 1     28                        27      1       72       
  SINCE JAN 1     28                        27      1       72       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION     W (280)      
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED     9.7                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    67           300 AM                                     
 LOWEST     44          1200 AM                                     
 AVERAGE    56                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   74        92      2000                    
 MINIMUM TEMPERATURE (F)   49        32      1976                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 13 2003...........SUNRISE   559 AM EDT   SUNSET   813 PM EDT   
MAY 14 2003...........SUNRISE   558 AM EDT   SUNSET   814 PM EDT   
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.