864  
CDUS41 KLWX 190524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT FRI MAR 19 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 18 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 54 5:22 PM 80 1989 56 -2 56  
MINIMUM 46 11:59 PM 13 1976 33 13 38  
AVERAGE 50 45 5 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.41 1.16 1998 0.11 0.30 0.08  
MONTH TO DATE 0.59 1.81 -1.22 0.66  
SINCE MAR 1 0.59 1.81 -1.22 0.66  
SINCE JAN 1 6.75 7.23 -0.48 7.23  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.5 1994 0.1 -0.1 0.0  
MONTH TO DATE T 2.1 -2.1 T  
SINCE MAR 1 T 2.1 -2.1 T  
SINCE JUL 1 12.0 21.0 -9.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 15 20 -5 18  
MONTH TO DATE 353 415 -62 289  
SINCE MAR 1 353 415 -62 289  
SINCE JUL 1 3546 4005 -459 3433  
 
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 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 7.9  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 2:00 PM  
LOWEST 83 12:00 AM  
AVERAGE 90  
   
......................................................
 
 
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 2021.........SUNRISE 7:14 AM EDT SUNSET 7:21 PM EDT  
MARCH 20 2021.........SUNRISE 7:13 AM EDT SUNSET 7:22 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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