249  
CDUS41 KLWX 030527  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
127 AM EDT TUE SEP 03 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 2 2024
 
 
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)  
YESTERDAY  
MAXIMUM 78 4:05 PM 99 1980 84 -6 90  
MINIMUM 58 10:53 PM 44 1970 63 -5 54  
AVERAGE 68 73 -5 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.97 1969 0.12 -0.12 0.00  
MONTH TO DATE 0.00 0.24 -0.24 0.00  
SINCE SEP 1 0.00 0.24 -0.24 0.00  
SINCE JAN 1 25.78 29.46 -3.68 19.22  
 
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 SEP 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 SEP 1 0 0 0 0  
SINCE JUL 1 2 1 1 0  
 
COOLING  
YESTERDAY 3 8 -5 7  
MONTH TO DATE 15 16 -1 12  
SINCE SEP 1 15 16 -1 12  
SINCE JAN 1 1429 1072 357 1127    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 10.3  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 35 2:00 PM  
AVERAGE 64  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 99 2023  
MINIMUM TEMPERATURE (F) 62 45 1967  
 
SUNRISE AND SUNSET  
SEPTEMBER 3 2024.....SUNRISE 6:41 AM EDT SUNSET 7:36 PM EDT  
SEPTEMBER 4 2024.....SUNRISE 6:42 AM EDT SUNSET 7:35 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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