028  
CDUS41 KLWX 092133  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
533 PM EDT FRI AUG 09 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 9 2024  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 85 3:53 PM 97 1980 87 -2 89  
2001  
MINIMUM 76 12:18 PM 47 1989 66 10 64  
AVERAGE 81 77 4 77  
 
PRECIPITATION (IN)  
TODAY 0.25 2.28 1969 0.12 0.13 0.00  
MONTH TO DATE 1.97 1.08 0.89 1.19  
SINCE JUN 1 5.32 9.53 -4.21 8.58  
SINCE JAN 1 22.62 26.77 -4.15 18.56  
 
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 0 13 -13 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 16 12 4 12  
MONTH TO DATE 163 108 55 99  
SINCE JUN 1 1016 724 292 754  
SINCE JAN 1 1199 830 369 828    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 13.8  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 11:00 AM  
LOWEST 75 4:00 PM  
AVERAGE 85  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 97 2009  
MINIMUM TEMPERATURE (F) 66 51 1999  
 
SUNRISE AND SUNSET  
AUGUST 9 2024........SUNRISE 6:18 AM EDT SUNSET 8:11 PM EDT  
AUGUST 10 2024........SUNRISE 6:19 AM EDT SUNSET 8:10 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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