131  
CDUS41 KLWX 070525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1225 AM EST SUN FEB 07 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 6 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 50 1:53 PM 71 2008 45 5 48  
MINIMUM 27 1:25 AM -9 1996 25 2 37  
AVERAGE 39 35 4 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.98 2010 0.10 -0.10 0.66  
MONTH TO DATE 0.25 0.59 -0.34 0.82  
SINCE DEC 1 7.94 6.23 1.71 7.12  
SINCE JAN 1 2.13 3.27 -1.14 4.15  
 
SNOWFALL (IN)  
YESTERDAY 0.0 17.5 2010 0.3 -0.3 0.0  
MONTH TO DATE 2.7 1.9 0.8 0.0  
SINCE DEC 1 8.3 12.7 -4.4 2.9  
SINCE JUL 1 8.3 13.2 -4.9 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 30 -4 22  
MONTH TO DATE 170 185 -15 104  
SINCE DEC 1 1876 2053 -177 1708  
SINCE JUL 1 2543 2969 -426 2571  
 
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 16 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 12:00 AM  
LOWEST 35 4:00 PM  
AVERAGE 52  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 72 2017  
MINIMUM TEMPERATURE (F) 25 -1 1995  
 
SUNRISE AND SUNSET  
FEBRUARY 7 2021......SUNRISE 7:10 AM EST SUNSET 5:38 PM EST  
FEBRUARY 8 2021......SUNRISE 7:09 AM EST SUNSET 5:40 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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