369  
CDUS41 KLWX 012134  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
434 PM EST TUE DEC 01 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 1 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 47 12:02 AM 75 2006 51 -4 43  
MINIMUM 38 8:17 AM 4 1967 31 7 38  
AVERAGE 43 41 2 41  
 
PRECIPITATION (IN)  
TODAY 0.01 2.02 1974 0.11 -0.10 0.39  
MONTH TO DATE 0.01 0.11 -0.10 0.39  
SINCE DEC 1 0.01 0.11 -0.10 0.39  
SINCE JAN 1 43.66 38.69 4.97 38.23  
 
SNOWFALL (IN)  
TODAY 0.0 T 1974 0.1 -0.1 0.0  
1981  
1992  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE DEC 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.6 -0.6 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 22 24 -2 24  
MONTH TO DATE 22 24 -2 24  
SINCE DEC 1 22 24 -2 24  
SINCE JUL 1 689 940 -251 887  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1406 1178 228 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 8.9  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 7:00 AM  
LOWEST 41 3:00 PM  
AVERAGE 62  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 51 75 1970  
MINIMUM TEMPERATURE (F) 31 0 1967  
 
SUNRISE AND SUNSET  
DECEMBER 1 2020......SUNRISE 7:10 AM EST SUNSET 4:48 PM EST  
DECEMBER 2 2020......SUNRISE 7:11 AM EST SUNSET 4:48 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