220  
CDUS41 KLWX 030524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST WED FEB 03 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 2 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 36 2:25 PM 68 1990 44 -8 58  
MINIMUM 31 10:58 PM 5 2004 24 7 30  
AVERAGE 34 34 0 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.23 1973 0.10 -0.09 T  
MONTH TO DATE 0.23 0.20 0.03 0.10  
SINCE DEC 1 7.92 5.84 2.08 6.40  
SINCE JAN 1 2.11 2.88 -0.77 3.43  
 
SNOWFALL (IN)  
YESTERDAY 0.2 4.7 1996 0.3 -0.1 0.0  
MONTH TO DATE 2.7 0.6 2.1 0.0  
SINCE DEC 1 8.3 11.4 -3.1 2.9  
SINCE JUL 1 8.3 11.9 -3.6 2.9  
SNOW DEPTH 4  
 
DEGREE DAYS  
HEATING  
YESTERDAY 31 31 0 21  
MONTH TO DATE 66 62 4 49  
SINCE DEC 1 1772 1930 -158 1653  
SINCE JUL 1 2439 2846 -407 2516  
 
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 30 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 17.7  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 5:00 AM  
LOWEST 54 5:00 PM  
AVERAGE 72  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 67 2020  
MINIMUM TEMPERATURE (F) 25 1 1965  
 
SUNRISE AND SUNSET  
FEBRUARY 3 2021......SUNRISE 7:14 AM EST SUNSET 5:34 PM EST  
FEBRUARY 4 2021......SUNRISE 7:13 AM EST SUNSET 5:35 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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