570  
CDUS41 KLWX 252131  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
531 PM EDT THU MAR 25 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 25 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 64 3:59 PM 78 2017 59 5 47  
MINIMUM 53 12:36 AM 17 1971 36 17 43  
AVERAGE 59 47 12 45  
 
PRECIPITATION (IN)  
TODAY T 0.96 1984 0.12 -0.12 0.25  
MONTH TO DATE 1.19 2.63 -1.44 1.37  
SINCE MAR 1 1.19 2.63 -1.44 1.37  
SINCE JAN 1 7.35 8.05 -0.70 7.94  
 
SNOWFALL (IN)  
TODAY 0.0 3.8 2014 0.0 0.0 0.0  
MONTH TO DATE T 2.5 -2.5 T  
SINCE MAR 1 T 2.5 -2.5 T  
SINCE JUL 1 12.0 21.4 -9.4 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 6 18 -12 20  
MONTH TO DATE 463 548 -85 387  
SINCE MAR 1 463 548 -85 387  
SINCE JUL 1 3656 4138 -482 3531  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 3  
SINCE MAR 1 0 0 0 3  
SINCE JAN 1 0 0 0 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 3.2  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1:00 AM  
LOWEST 80 4:00 PM  
AVERAGE 90  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 78 2004  
MINIMUM TEMPERATURE (F) 36 17 1983  
 
SUNRISE AND SUNSET  
MARCH 25 2021.........SUNRISE 7:05 AM EDT SUNSET 7:27 PM EDT  
MARCH 26 2021.........SUNRISE 7:03 AM EDT SUNSET 7:28 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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