225  
CDUS41 KLWX 092127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
526 PM EDT TUE APR 9 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 9 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 359 PM 89 2001 65 14 43  
MINIMUM 55 633 AM 23 1977 40 15 36  
AVERAGE 67 52 15 40  
 
PRECIPITATION (IN)  
TODAY 0.00 1.02 1998 0.13 -0.13 T  
MONTH TO DATE 0.38 1.09 -0.71 0.15  
SINCE MAR 1 4.93 4.47 0.46 1.94  
SINCE JAN 1 12.39 9.89 2.50 8.33  
 
SNOWFALL (IN)  
TODAY 0.0 2.6 1982 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2  
SINCE JUL 1 26.5 21.9 4.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 13 -13 25  
MONTH TO DATE 114 129 -15 157  
SINCE MAR 1 798 776 22 936  
SINCE JUL 1 4303 4366 -63 4287  
 
COOLING  
TODAY 2 0 2 0  
MONTH TO DATE 8 0 8 0  
SINCE MAR 1 8 3 5 0  
SINCE JAN 1 8 3 5 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 4.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 500 AM  
LOWEST 30 400 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 89 2013  
MINIMUM TEMPERATURE (F) 41 19 1985  
 
 
SUNRISE AND SUNSET  
APRIL 9 2019.........SUNRISE 643 AM EDT SUNSET 741 PM EDT  
APRIL 10 2019.........SUNRISE 641 AM EDT SUNSET 742 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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