079  
CDUS41 KLWX 050524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST FRI FEB 05 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 4 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 49 3:45 PM 70 1991 44 5 67  
MINIMUM 28 7:25 AM 4 1965 25 3 53  
1996  
AVERAGE 39 34 5 60  
 
PRECIPITATION (IN)  
YESTERDAY T 2.17 1998 0.10 -0.10 T  
MONTH TO DATE 0.23 0.40 -0.17 0.10  
SINCE DEC 1 7.92 6.04 1.88 6.40  
SINCE JAN 1 2.11 3.08 -0.97 3.43  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.2 1995 0.3 -0.3 0.0  
MONTH TO DATE 2.7 1.3 1.4 0.0  
SINCE DEC 1 8.3 12.1 -3.8 2.9  
SINCE JUL 1 8.3 12.6 -4.3 2.9  
SNOW DEPTH 2  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 31 -5 5  
MONTH TO DATE 121 124 -3 65  
SINCE DEC 1 1827 1992 -165 1669  
SINCE JUL 1 2494 2908 -414 2532  
 
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 25 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 53 5:00 AM  
LOWEST 22 3:00 PM  
AVERAGE 38  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 73 1991  
MINIMUM TEMPERATURE (F) 25 -10 1996  
 
SUNRISE AND SUNSET  
FEBRUARY 5 2021......SUNRISE 7:12 AM EST SUNSET 5:36 PM EST  
FEBRUARY 6 2021......SUNRISE 7:11 AM EST SUNSET 5:37 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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