418  
CDUS41 KLWX 200623  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
223 AM EDT SUN APR 20 2025  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 19 2025
 
 
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)  
YESTERDAY  
MAXIMUM 82 4:00 PM 91 2002 68 14 57  
MINIMUM 67 8:19 AM 27 1990 44 23 53  
2001  
AVERAGE 75 56 19 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.26 2019 0.11 -0.11 0.01  
MONTH TO DATE 1.37 2.09 -0.72 1.44  
SINCE MAR 1 2.79 5.59 -2.80 5.33  
SINCE JAN 1 7.21 11.14 -3.93 12.78  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2022 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 T  
SINCE MAR 1 0.0 4.0 -4.0 T  
SINCE JUL 1 15.5 21.0 -5.5 11.7  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 9 -9 10  
MONTH TO DATE 217 235 -18 144  
SINCE MAR 1 667 882 -215 608  
SINCE JUL 1 3989 4392 -403 3572  
 
COOLING  
YESTERDAY 10 1 9 0  
MONTH TO DATE 12 8 4 19  
SINCE MAR 1 29 10 19 19  
SINCE JAN 1 29 10 19 22    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 13.6  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 66 11:00 PM  
LOWEST 46 4:00 PM  
AVERAGE 56  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 88 1976  
1985  
2023  
MINIMUM TEMPERATURE (F) 45 28 1974  
 
SUNRISE AND SUNSET  
APRIL 20 2025.........SUNRISE 6:26 AM EDT SUNSET 7:52 PM EDT  
APRIL 21 2025.........SUNRISE 6:24 AM EDT SUNSET 7:53 PM EDT  
 
- 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