560  
CDUS41 KLWX 172126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
426 PM EST TUE NOV 17 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 17 2020
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 56 10:48 AM 75 1963 57 -1 44  
MINIMUM 32 1:30 AM 17 1976 35 -3 34  
AVERAGE 44 46 -2 39  
 
PRECIPITATION (IN)  
TODAY 0.00 1.03 1987 0.11 -0.11 0.00  
MONTH TO DATE 2.03 1.91 0.12 0.29  
SINCE SEP 1 7.85 9.08 -1.23 6.67  
SINCE JAN 1 42.07 37.08 4.99 36.51  
 
SNOWFALL (IN)  
TODAY 0.0 T 1965 0.0 0.0 0.0  
1967  
1980  
MONTH TO DATE 0.0 0.1 -0.1 T  
SINCE SEP 1 0.0 0.1 -0.1 T  
SINCE JUL 1 0.0 0.1 -0.1 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 21 19 2 26  
MONTH TO DATE 182 279 -97 398  
SINCE SEP 1 449 633 -184 583  
SINCE JUL 1 449 635 -186 583  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE SEP 1 154 160 -6 289  
SINCE JAN 1 1406 1176 230 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 11.2  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 2:00 AM  
LOWEST 37 3:00 PM  
AVERAGE 52  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 76 1963  
MINIMUM TEMPERATURE (F) 35 18 2014  
 
SUNRISE AND SUNSET  
NOVEMBER 17 2020......SUNRISE 6:55 AM EST SUNSET 4:54 PM EST  
NOVEMBER 18 2020......SUNRISE 6:56 AM EST SUNSET 4:53 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