707  
CDUS41 KLWX 222135  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
535 PM EDT SUN SEP 22 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 22 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 74 1:28 PM 94 1970 77 -3 74  
1980  
2010  
MINIMUM 64 5:43 AM 35 1962 56 8 57  
AVERAGE 69 66 3 66  
 
PRECIPITATION (IN)  
TODAY 0.02 1.57 1982 0.12 -0.10 0.07  
MONTH TO DATE 0.64 2.86 -2.22 3.68  
SINCE SEP 1 0.64 2.86 -2.22 3.68  
SINCE JAN 1 26.42 32.08 -5.66 22.90  
 
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 0 2 -2 0  
MONTH TO DATE 11 18 -7 1  
SINCE SEP 1 11 18 -7 1  
SINCE JUL 1 13 19 -6 1  
 
COOLING  
TODAY 4 3 1 1  
MONTH TO DATE 97 131 -34 209  
SINCE SEP 1 97 131 -34 209  
SINCE JAN 1 1511 1187 324 1324    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 6.6  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 6:00 AM  
LOWEST 69 1:00 PM  
AVERAGE 83  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 94 2019  
MINIMUM TEMPERATURE (F) 55 33 1983  
 
SUNRISE AND SUNSET  
SEPTEMBER 22 2024.....SUNRISE 6:58 AM EDT SUNSET 7:06 PM EDT  
SEPTEMBER 23 2024.....SUNRISE 6:59 AM EDT SUNSET 7:04 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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