993  
CDUS41 KLWX 190531  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
129 AM EDT TUE MAR 19 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 18 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 51 320 PM 80 1989 56 -5 58  
MINIMUM 29 219 AM 13 1976 33 -4 29  
AVERAGE 40 45 -5 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.16 1998 0.11 -0.11 0.00  
MONTH TO DATE 1.80 1.81 -0.01 0.24  
SINCE MAR 1 1.80 1.81 -0.01 0.24  
SINCE JAN 1 9.26 7.23 2.03 6.63  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.5 1994 0.1 -0.1  
MONTH TO DATE 1.6 2.1 -0.5  
SINCE JUL 1 26.5 21.0 5.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 20 5 21  
MONTH TO DATE 436 415 21 481  
SINCE MAR 1 436 415 21 481  
SINCE JUL 1 3941 4005 -64 3832  
 
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 15 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 4.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 700 AM  
LOWEST 29 500 PM  
AVERAGE 50  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 76 2012  
MINIMUM TEMPERATURE (F) 34 10 1967  
 
 
SUNRISE AND SUNSET  
MARCH 19 2019.........SUNRISE 715 AM EDT SUNSET 721 PM EDT  
MARCH 20 2019.........SUNRISE 714 AM EDT SUNSET 722 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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