117  
CDUS41 KLWX 242122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT TUE SEP 24 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 24 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 66 3:14 PM 97 2010 76 -10 71  
MINIMUM 61 6:23 AM 30 1974 55 6 61  
AVERAGE 64 65 -1 66  
 
PRECIPITATION (IN)  
TODAY 0.20 2.17 2001 0.13 0.07 1.29  
MONTH TO DATE 1.03 3.11 -2.08 6.48  
SINCE SEP 1 1.03 3.11 -2.08 6.48  
SINCE JAN 1 26.81 32.33 -5.52 25.70  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 T  
SINCE SEP 1 0.0 0.0 0.0 T  
SINCE JUL 1 0.0 0.0 0.0 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 1 2 -1 0  
MONTH TO DATE 12 22 -10 6  
SINCE SEP 1 12 22 -10 6  
SINCE JUL 1 14 23 -9 6  
 
COOLING  
TODAY 0 3 -3 1  
MONTH TO DATE 97 137 -40 210  
SINCE SEP 1 97 137 -40 210  
SINCE JAN 1 1511 1193 318 1325    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 10:00 AM  
LOWEST 90 4:00 AM  
AVERAGE 94  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 93 2010  
MINIMUM TEMPERATURE (F) 54 33 1983  
 
SUNRISE AND SUNSET  
SEPTEMBER 24 2024.....SUNRISE 7:00 AM EDT SUNSET 7:03 PM EDT  
SEPTEMBER 25 2024.....SUNRISE 7:01 AM EDT SUNSET 7:01 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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