847  
CDUS41 KLWX 050523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST TUE DEC 05 2023  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 4 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 1:33 PM 75 1998 50 5 48  
MINIMUM 37 5:07 AM 10 1966 31 6 25  
AVERAGE 46 40 6 37  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.18 1993 0.11 -0.11 0.00  
MONTH TO DATE 0.69 0.45 0.24 0.33  
SINCE DEC 1 0.69 0.45 0.24 0.33  
SINCE JAN 1 29.72 40.39 -10.67 36.14  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2014 0.0 0.0 0.0  
2016  
2019  
MONTH TO DATE 0.0 0.2 -0.2 0.0  
SINCE DEC 1 0.0 0.2 -0.2 0.0  
SINCE JUL 1 T 0.5 -0.5 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 19 25 -6 28  
MONTH TO DATE 68 97 -29 97  
SINCE DEC 1 68 97 -29 97  
SINCE JUL 1 839 997 -158 931  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1380 1231 149 1376    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 5.4  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 6:00 AM  
LOWEST 46 1:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 77 2001  
MINIMUM TEMPERATURE (F) 31 12 1966  
 
SUNRISE AND SUNSET  
DECEMBER 5 2023......SUNRISE 7:13 AM EST SUNSET 4:47 PM EST  
DECEMBER 6 2023......SUNRISE 7:14 AM EST SUNSET 4:47 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