932  
CDUS41 KLWX 130626  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
226 AM EDT SUN APR 13 2025  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 12 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 53 12:41 PM 87 1977 66 -13 67  
MINIMUM 43 7:01 AM 23 1982 42 1 57  
AVERAGE 48 54 -6 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 1.45 2004 0.11 -0.06 0.10  
MONTH TO DATE 1.19 1.33 -0.14 1.43  
SINCE MAR 1 2.61 4.83 -2.22 5.32  
SINCE JAN 1 7.03 10.38 -3.35 12.77  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.0 1973 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 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 12 5 3  
MONTH TO DATE 161 163 -2 122  
SINCE MAR 1 611 810 -199 586  
SINCE JUL 1 3933 4320 -387 3550  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 2 1 1 9  
SINCE MAR 1 19 3 16 9  
SINCE JAN 1 19 3 16 12    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 12.8  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 12:00 AM  
LOWEST 58 6:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 87 1977  
2023  
MINIMUM TEMPERATURE (F) 42 24 1990  
 
SUNRISE AND SUNSET  
APRIL 13 2025.........SUNRISE 6:36 AM EDT SUNSET 7:45 PM EDT  
APRIL 14 2025.........SUNRISE 6:34 AM EDT SUNSET 7:46 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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