064  
CDUS41 KLWX 280522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1222 AM EST SUN FEB 28 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 27 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 54 5:04 PM 74 1997 50 4 44  
MINIMUM 36 7:13 AM 8 1968 28 8 28  
AVERAGE 45 39 6 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.16 0.60 2000 0.10 0.06 0.08  
MONTH TO DATE 3.31 2.65 0.66 3.24  
SINCE DEC 1 11.00 8.29 2.71 9.54  
SINCE JAN 1 5.19 5.33 -0.14 6.57  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 2003 0.2 -0.2 0.0  
MONTH TO DATE 6.2 7.4 -1.2 T  
SINCE DEC 1 11.8 18.2 -6.4 2.9  
SINCE JUL 1 11.8 18.7 -6.9 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 26 -6 29  
MONTH TO DATE 800 781 19 615  
SINCE DEC 1 2506 2649 -143 2219  
SINCE JUL 1 3173 3565 -392 3082  
 
COOLING  
YESTERDAY 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 10 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 3.3  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 9:00 AM  
LOWEST 69 5:00 PM  
AVERAGE 83  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 50 70 1965  
1976  
MINIMUM TEMPERATURE (F) 28 10 1993  
2014  
 
SUNRISE AND SUNSET  
FEBRUARY 28 2021......SUNRISE 6:43 AM EST SUNSET 6:02 PM EST  
MARCH 1 2021.........SUNRISE 6:42 AM EST SUNSET 6:03 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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