599  
CDUS41 KLWX 272136  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
536 PM EDT SAT MAR 27 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 27 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 73 2:02 PM 85 1998 60 13 68  
MINIMUM 43 6:42 AM 15 2014 36 7 44  
AVERAGE 58 48 10 56  
 
PRECIPITATION (IN)  
TODAY 0.00 1.19 1983 0.13 -0.13 0.01  
1994  
MONTH TO DATE 1.19 2.88 -1.69 1.38  
SINCE MAR 1 1.19 2.88 -1.69 1.38  
SINCE JAN 1 7.35 8.30 -0.95 7.95  
 
SNOWFALL (IN)  
TODAY 0.0 0.1 2011 0.1 -0.1 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  
TODAY 7 17 -10 9  
MONTH TO DATE 470 583 -113 411  
SINCE MAR 1 470 583 -113 411  
SINCE JUL 1 3663 4173 -510 3555  
 
COOLING  
TODAY 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 17 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 5:00 AM  
LOWEST 38 2:00 PM  
AVERAGE 64  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 86 1989  
MINIMUM TEMPERATURE (F) 37 18 2001  
 
SUNRISE AND SUNSET  
MARCH 27 2021.........SUNRISE 7:02 AM EDT SUNSET 7:29 PM EDT  
MARCH 28 2021.........SUNRISE 7:00 AM EDT SUNSET 7:30 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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