961  
CDUS41 KLWX 210529  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
127 AM EDT THU MAR 21 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 20 2019
 
 
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)  
YESTERDAY  
MAXIMUM 55 223 PM 77 1976 57 -2 44  
MINIMUM 27 635 AM 18 1981 34 -7 29  
AVERAGE 41 46 -5 37  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.81 2003 0.11 -0.11 0.78  
MONTH TO DATE 1.80 2.04 -0.24 1.02  
SINCE MAR 1 1.80 2.04 -0.24 1.02  
SINCE JAN 1 9.26 7.46 1.80 7.41  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.2 1990 0.1 -0.1  
MONTH TO DATE 1.6 2.2 -0.6  
SINCE JUL 1 26.5 21.1 5.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 20 4 28  
MONTH TO DATE 488 455 33 531  
SINCE MAR 1 488 455 33 531  
SINCE JUL 1 3993 4045 -52 3882  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.4  
 
 
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 81 500 AM  
LOWEST 26 300 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 78 2010  
MINIMUM TEMPERATURE (F) 34 14 1965  
 
 
SUNRISE AND SUNSET  
MARCH 21 2019.........SUNRISE 712 AM EDT SUNSET 723 PM EDT  
MARCH 22 2019.........SUNRISE 710 AM EDT SUNSET 724 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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