964  
CDUS41 KLWX 102124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
424 PM EST WED FEB 10 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 10 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 42 11:23 AM 63 1990 45 -3 47  
2001  
MINIMUM 29 4:12 AM -10 1979 25 4 41  
AVERAGE 36 35 1 44  
 
PRECIPITATION (IN)  
TODAY T 0.65 1970 0.10 -0.10 0.40  
MONTH TO DATE 0.71 0.99 -0.28 1.58  
SINCE DEC 1 8.40 6.63 1.77 7.88  
SINCE JAN 1 2.59 3.67 -1.08 4.91  
 
SNOWFALL (IN)  
TODAY T 7.1 2010 0.3 -0.3 0.0  
MONTH TO DATE 4.5 3.1 1.4 0.0  
SINCE DEC 1 10.1 13.9 -3.8 2.9  
SINCE JUL 1 10.1 14.4 -4.3 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 29 30 -1 21  
MONTH TO DATE 292 305 -13 201  
SINCE DEC 1 1998 2173 -175 1805  
SINCE JUL 1 2665 3089 -424 2668  
 
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 N (350)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 4:00 PM  
LOWEST 55 1:00 PM  
AVERAGE 65  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 71 2009  
MINIMUM TEMPERATURE (F) 25 -7 1979  
 
SUNRISE AND SUNSET  
FEBRUARY 10 2021......SUNRISE 7:07 AM EST SUNSET 5:42 PM EST  
FEBRUARY 11 2021......SUNRISE 7:05 AM EST SUNSET 5:43 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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