392  
CDUS41 KLWX 172121  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
521 PM EDT TUE JUN 17 2025  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 17 2025
 
 
VALID TODAY AS OF 0500 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 81 1:58 PM 96 2022 84 -3 91  
MINIMUM 66 4:25 AM 46 1980 63 3 68  
AVERAGE 74 73 1 80  
 
PRECIPITATION (IN)  
TODAY 0.06 1.01 1979 0.15 -0.09 0.00  
MONTH TO DATE 5.18 2.50 2.68 0.28  
SINCE JUN 1 5.18 2.50 2.68 0.28  
SINCE JAN 1 19.10 19.74 -0.64 17.58  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 15.5 21.0 -5.5 11.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 15 11 4 0  
SINCE JUN 1 15 11 4 0  
SINCE JUL 1 4106 4603 -497 3691  
 
COOLING  
TODAY 9 8 1 15  
MONTH TO DATE 119 109 10 140  
SINCE JUN 1 119 109 10 140  
SINCE JAN 1 237 215 22 323    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 3.9  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 3:00 AM  
LOWEST 76 2:00 PM  
AVERAGE 88  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 94 2006  
2007  
2018  
MINIMUM TEMPERATURE (F) 63 45 1965  
 
SUNRISE AND SUNSET  
JUNE 17 2025..........SUNRISE 5:44 AM EDT SUNSET 8:38 PM EDT  
JUNE 18 2025..........SUNRISE 5:44 AM EDT SUNSET 8:38 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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