852  
CDUS41 KLWX 212126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
426 PM EST TUE JAN 21 2025  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 21 2025  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 20 2:33 PM 63 2018 42 -22 32  
MINIMUM 10 7:01 AM -16 1984 25 -15 17  
AVERAGE 15 34 -19 25  
 
PRECIPITATION (IN)  
TODAY 0.00 0.94 1974 0.10 -0.10 0.00  
MONTH TO DATE 1.15 1.99 -0.84 4.31  
SINCE DEC 1 4.49 5.29 -0.80 10.06  
SINCE JAN 1 1.15 1.99 -0.84 4.31  
 
SNOWFALL (IN)  
TODAY T 8.5 2014 0.3 -0.3 0.0  
MONTH TO DATE 10.5 4.2 6.3 9.5  
SINCE DEC 1 10.6 7.0 3.6 10.0  
SINCE JUL 1 10.6 7.3 3.3 10.0  
SNOW DEPTH 1  
 
DEGREE DAYS  
HEATING  
TODAY 50 31 19 40  
MONTH TO DATE 745 647 98 651  
SINCE DEC 1 1574 1492 82 1326  
SINCE JUL 1 2242 2392 -150 2097  
 
COOLING  
TODAY 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 13 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 55 3:00 AM  
LOWEST 39 1:00 PM  
AVERAGE 47  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 68 1986  
MINIMUM TEMPERATURE (F) 25 -18 1984  
 
SUNRISE AND SUNSET  
JANUARY 21 2025.......SUNRISE 7:24 AM EST SUNSET 5:19 PM EST  
JANUARY 22 2025.......SUNRISE 7:23 AM EST SUNSET 5:20 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