222  
CDUS41 KLWX 250522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1222 AM EST THU FEB 25 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 24 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 66 4:38 PM 79 1985 49 17 61  
MINIMUM 27 5:55 AM -4 2015 28 -1 25  
AVERAGE 47 38 9 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.52 1979 0.10 -0.10 0.00  
MONTH TO DATE 3.00 2.36 0.64 2.15  
SINCE DEC 1 10.69 8.00 2.69 8.45  
SINCE JAN 1 4.88 5.04 -0.16 5.48  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.1 1966 0.2 -0.2 0.0  
MONTH TO DATE 6.2 6.8 -0.6 T  
SINCE DEC 1 11.8 17.6 -5.8 2.9  
SINCE JUL 1 11.8 18.1 -6.3 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 18 27 -9 22  
MONTH TO DATE 736 702 34 554  
SINCE DEC 1 2442 2570 -128 2158  
SINCE JUL 1 3109 3486 -377 3021  
 
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 23 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 6:00 AM  
LOWEST 28 3:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 79 2000  
MINIMUM TEMPERATURE (F) 28 6 2015  
 
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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