039  
CDUS41 KLWX 290534  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
134 AM EDT MON MAR 29 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 28 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 70 4:23 PM 86 1989 60 10 58  
MINIMUM 46 11:57 PM 18 2001 37 9 51  
AVERAGE 58 48 10 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.47 1.40 1984 0.12 0.35 0.46  
MONTH TO DATE 1.66 3.00 -1.34 1.84  
SINCE MAR 1 1.66 3.00 -1.34 1.84  
SINCE JAN 1 7.82 8.42 -0.60 8.41  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.3 1996 0.0 0.0 0.0  
MONTH TO DATE T 2.7 -2.7 T  
SINCE MAR 1 T 2.7 -2.7 T  
SINCE JUL 1 12.0 21.6 -9.6 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 7 17 -10 10  
MONTH TO DATE 477 600 -123 421  
SINCE MAR 1 477 600 -123 421  
SINCE JUL 1 3670 4190 -520 3565  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 4 0 4 3  
SINCE MAR 1 4 0 4 3  
SINCE JAN 1 4 0 4 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 53 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 13.6  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 10:00 AM  
LOWEST 41 9:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 86 1998  
MINIMUM TEMPERATURE (F) 37 20 1982  
 
SUNRISE AND SUNSET  
MARCH 29 2021.........SUNRISE 6:59 AM EDT SUNSET 7:31 PM EDT  
MARCH 30 2021.........SUNRISE 6:57 AM EDT SUNSET 7:32 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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