359  
CDUS41 KLWX 120537  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1237 AM EST FRI FEB 12 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 11 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 35 5:26 AM 71 2009 45 -10 55  
MINIMUM 31 11:59 PM -7 1979 25 6 46  
AVERAGE 33 35 -2 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.07 2.07 1983 0.10 -0.03 0.37  
MONTH TO DATE 1.08 1.09 -0.01 1.95  
SINCE DEC 1 8.77 6.73 2.04 8.25  
SINCE JAN 1 2.96 3.77 -0.81 5.28  
 
SNOWFALL (IN)  
YESTERDAY T 22.5 1983 0.3 -0.3 0.0  
MONTH TO DATE 5.0 3.4 1.6 0.0  
SINCE DEC 1 10.6 14.2 -3.6 2.9  
SINCE JUL 1 10.6 14.7 -4.1 2.9  
SNOW DEPTH T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 30 2 14  
MONTH TO DATE 324 335 -11 215  
SINCE DEC 1 2030 2203 -173 1819  
SINCE JUL 1 2697 3119 -422 2682  
 
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 15 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
LIGHT SNOW  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 3:00 AM  
LOWEST 69 8:00 PM  
AVERAGE 83  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 74 1999  
MINIMUM TEMPERATURE (F) 25 3 1964  
 
SUNRISE AND SUNSET  
FEBRUARY 12 2021......SUNRISE 7:04 AM EST SUNSET 5:44 PM EST  
FEBRUARY 13 2021......SUNRISE 7:03 AM EST SUNSET 5:45 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page