000 
CDUS41 KLWX 210539
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
138 AM EDT SUN MAY 21 2006

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

...THE WASHINGTON DULLES CLIMATE SUMMARY FOR MAY 20 2006...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2006

WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         73    346 PM  93    1996  76     -3       58       
  MINIMUM         51   1150 PM  36    2002  51      0       48       
  AVERAGE         62                        63     -1       53      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.86 2005   0.14  -0.14     1.86    
  MONTH TO DATE    1.74                      2.68  -0.94     3.59    
  SINCE MAR 1      6.67                      9.45  -2.78    11.86    
  SINCE JAN 1     11.45                     15.27  -3.82    16.41    
                                                                     
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 MAR 1      T                         3.8   -3.8      1.2     
  SINCE JUL 1     14.1                      21.2   -7.1     17.3     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        3                         4     -1       12       
  MONTH TO DATE  103                       111     -8      138       
  SINCE MAR 1    924                      1143   -219     1177       
  SINCE JUL 1   4152                      4903   -751     4513       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE    8                        26    -18       15       
  SINCE MAR 1     20                        41    -21       26       
  SINCE JAN 1     20                        41    -21       26       
..................................................................

WIND (MPH)                                                           
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED     8.1                                         
                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              
                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               
                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    83           100 AM                                     
 LOWEST     27           300 PM                                     
 AVERAGE    55                                                       
..........................................................
                                                                     
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   76        92      1996                    
 MINIMUM TEMPERATURE (F)   52        33      1992                    
                                                                     
SUNRISE AND SUNSET                                                   
MAY 21 2006...........SUNRISE   552 AM EDT   SUNSET   821 PM EDT   
MAY 22 2006...........SUNRISE   552 AM EDT   SUNSET   822 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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