588  
CDUS41 KLWX 180626  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
226 AM EDT MON AUG 18 2025  
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR AUGUST 17 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 96 3:55 PM 105 1997 88 8 86  
MINIMUM 75 6:09 AM 51 1902 71 4 72  
AVERAGE 86 80 6 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 2.39 1879 0.10 -0.09 0.19  
MONTH TO DATE 0.04 1.78 -1.74 3.64  
SINCE JUN 1 9.06 10.31 -1.25 9.61  
SINCE JAN 1 27.10 26.44 0.66 28.15  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 8 4 4 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 21 14 7 14  
MONTH TO DATE 227 260 -33 280  
SINCE JUN 1 1149 1099 50 1319  
SINCE JAN 1 1350 1266 84 1544    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 5:00 AM  
LOWEST 46 4:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 98 2002  
MINIMUM TEMPERATURE (F) 71 54 1902  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 6:25 AM EDT SUNSET 7:58 PM EDT  
AUGUST 19 2025........SUNRISE 6:26 AM EDT SUNSET 7:57 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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