695  
CDUS41 KLWX 212136  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
436 PM EST SUN FEB 21 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 21 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 39 3:30 PM 80 2018 48 -9 38  
MINIMUM 16 6:22 AM 7 1968 27 -11 21  
1972  
AVERAGE 28 37 -9 30  
 
PRECIPITATION (IN)  
TODAY 0.00 0.93 2015 0.10 -0.10 0.00  
MONTH TO DATE 2.67 2.07 0.60 2.15  
SINCE DEC 1 10.36 7.71 2.65 8.45  
SINCE JAN 1 4.55 4.75 -0.20 5.48  
 
SNOWFALL (IN)  
TODAY 0.0 8.9 2015 0.2 -0.2 0.0  
MONTH TO DATE 6.2 6.1 0.1 T  
SINCE DEC 1 11.8 16.9 -5.1 2.9  
SINCE JUL 1 11.8 17.4 -5.6 2.9  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
TODAY 37 28 9 35  
MONTH TO DATE 664 621 43 478  
SINCE DEC 1 2370 2489 -119 2082  
SINCE JUL 1 3037 3405 -368 2945  
 
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 12 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 3.9  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 7:00 AM  
LOWEST 34 1:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 71 1991  
MINIMUM TEMPERATURE (F) 27 4 1968  
 
SUNRISE AND SUNSET  
FEBRUARY 21 2021......SUNRISE 6:53 AM EST SUNSET 5:54 PM EST  
FEBRUARY 22 2021......SUNRISE 6:52 AM EST SUNSET 5:55 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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