882  
CDUS41 KLWX 212128  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
528 PM EDT WED AUG 21 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 21 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 77 2:37 PM 96 1962 86 -9 94  
MINIMUM 50 4:44 AM 47 1976 65 -15 64  
AVERAGE 64 75 -11 79  
 
PRECIPITATION (IN)  
TODAY 0.00 2.72 2018 0.10 -0.10 0.00  
MONTH TO DATE 3.05 2.38 0.67 1.84  
SINCE JUN 1 6.40 10.83 -4.43 9.23  
SINCE JAN 1 23.70 28.07 -4.37 19.21  
 
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 1 0 1 0  
MONTH TO DATE 1 0 1 0  
SINCE JUN 1 1 13 -12 5  
SINCE JUL 1 1 0 1 0  
 
COOLING  
TODAY 0 10 -10 14  
MONTH TO DATE 273 239 34 252  
SINCE JUN 1 1126 855 271 907  
SINCE JAN 1 1309 961 348 981    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 5:00 AM  
LOWEST 33 4:00 PM  
AVERAGE 58  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 101 1983  
MINIMUM TEMPERATURE (F) 65 51 1969  
1976  
 
SUNRISE AND SUNSET  
AUGUST 21 2024........SUNRISE 6:29 AM EDT SUNSET 7:56 PM EDT  
AUGUST 22 2024........SUNRISE 6:30 AM EDT SUNSET 7:54 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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