634  
CDUS41 KLWX 252136  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
436 PM EST THU FEB 25 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 25 2021
 
 
VALID TODAY AS OF 0400 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 56 1:17 AM 79 2000 49 7 52  
MINIMUM 42 7:25 AM 6 2015 28 14 45  
AVERAGE 49 38 11 49  
 
PRECIPITATION (IN)  
TODAY 0.00 1.20 1979 0.10 -0.10 0.27  
MONTH TO DATE 3.00 2.46 0.54 2.42  
SINCE DEC 1 10.69 8.10 2.59 8.72  
SINCE JAN 1 4.88 5.14 -0.26 5.75  
 
SNOWFALL (IN)  
TODAY 0.0 4.5 2007 0.2 -0.2 0.0  
MONTH TO DATE 6.2 7.0 -0.8 T  
SINCE DEC 1 11.8 17.8 -6.0 2.9  
SINCE JUL 1 11.8 18.3 -6.5 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 16 27 -11 16  
MONTH TO DATE 752 729 23 570  
SINCE DEC 1 2458 2597 -139 2174  
SINCE JUL 1 3125 3513 -388 3037  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 13.7  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 1:00 AM  
LOWEST 23 4:00 PM  
AVERAGE 46  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 69 1977  
2002  
MINIMUM TEMPERATURE (F) 28 7 1970  
 
SUNRISE AND SUNSET  
FEBRUARY 25 2021......SUNRISE 6:48 AM EST SUNSET 5:59 PM EST  
FEBRUARY 26 2021......SUNRISE 6:46 AM EST SUNSET 6:00 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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