550  
CDUS41 KLWX 300549  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
149 AM EDT TUE MAR 30 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 29 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 60 4:37 PM 86 1998 61 -1 70  
MINIMUM 37 11:59 PM 20 1982 37 0 49  
AVERAGE 49 49 0 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.33 2001 0.13 -0.13 T  
MONTH TO DATE 1.66 3.13 -1.47 1.84  
SINCE MAR 1 1.66 3.13 -1.47 1.84  
SINCE JAN 1 7.82 8.55 -0.73 8.41  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.2 1984 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 16 16 0 5  
MONTH TO DATE 493 616 -123 426  
SINCE MAR 1 493 616 -123 426  
SINCE JUL 1 3686 4206 -520 3570  
 
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 36 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 48 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 11:00 PM  
LOWEST 23 6:00 PM  
AVERAGE 50  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 89 1998  
MINIMUM TEMPERATURE (F) 37 22 1970  
 
SUNRISE AND SUNSET  
MARCH 30 2021.........SUNRISE 6:57 AM EDT SUNSET 7:32 PM EDT  
MARCH 31 2021.........SUNRISE 6:56 AM EDT SUNSET 7:33 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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