943  
CDUS41 KLWX 182126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
526 PM EDT FRI JUL 18 2025  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 18 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 86 3:27 PM 101 2012 88 -2 85  
MINIMUM 74 3:05 AM 51 1985 67 7 72  
AVERAGE 80 78 2 79  
 
PRECIPITATION (IN)  
TODAY T 1.66 2017 0.15 -0.15 0.00  
MONTH TO DATE 1.79 2.47 -0.68 2.10  
SINCE JUN 1 8.72 6.77 1.95 2.79  
SINCE JAN 1 22.64 24.01 -1.37 20.09  
 
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 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 15 13 2 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 15 12 3 14  
MONTH TO DATE 268 214 54 316  
SINCE JUN 1 589 452 137 670  
SINCE JAN 1 707 558 149 853    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 4.4  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 3:00 AM  
LOWEST 57 12:00 PM  
AVERAGE 67  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 98 1977  
2020  
MINIMUM TEMPERATURE (F) 67 53 1976  
 
SUNRISE AND SUNSET  
JULY 18 2025..........SUNRISE 5:59 AM EDT SUNSET 8:33 PM EDT  
JULY 19 2025..........SUNRISE 6:00 AM EDT SUNSET 8:32 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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