456  
CDUS41 KLWX 062125  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
525 PM EDT FRI SEP 06 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 6 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 80 3:18 PM 100 2023 83 -3 100  
MINIMUM 57 2:21 AM 45 1972 61 -4 69  
1976  
AVERAGE 69 72 -3 85  
 
PRECIPITATION (IN)  
TODAY 0.00 5.11 2008 0.12 -0.12 0.00  
MONTH TO DATE 0.00 0.73 -0.73 0.00  
SINCE SEP 1 0.00 0.73 -0.73 0.00  
SINCE JAN 1 25.78 29.95 -4.17 19.22  
 
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 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  
TODAY 0 0 0 0  
MONTH TO DATE 2 0 2 0  
SINCE SEP 1 2 0 2 0  
SINCE JUL 1 4 1 3 0  
 
COOLING  
TODAY 4 7 -3 20  
MONTH TO DATE 19 47 -28 91  
SINCE SEP 1 19 47 -28 91  
SINCE JAN 1 1433 1103 330 1206    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 2.8  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 50 2:00 PM  
AVERAGE 72  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 97 2023  
MINIMUM TEMPERATURE (F) 61 41 1976  
 
SUNRISE AND SUNSET  
SEPTEMBER 6 2024.....SUNRISE 6:44 AM EDT SUNSET 7:32 PM EDT  
SEPTEMBER 7 2024.....SUNRISE 6:45 AM EDT SUNSET 7:30 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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