682  
CDUS41 KLWX 120523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT SAT OCT 12 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 11 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 70 3:32 PM 86 2010 70 0 72  
MINIMUM 39 5:24 AM 28 1972 47 -8 39  
AVERAGE 55 58 -3 56  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.38 2013 0.12 -0.12 0.00  
MONTH TO DATE 0.13 1.36 -1.23 0.18  
SINCE SEP 1 3.40 5.30 -1.90 6.83  
SINCE JAN 1 29.18 34.52 -5.34 26.05  
 
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 T  
SINCE JUL 1 0.0 0.0 0.0 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 8 2 9  
MONTH TO DATE 39 66 -27 47  
SINCE SEP 1 51 111 -60 63  
SINCE JUL 1 53 112 -59 63  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 14 16 -2 32  
SINCE SEP 1 151 168 -17 248  
SINCE JAN 1 1565 1224 341 1363    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 3.6  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 32 3:00 PM  
AVERAGE 63  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 83 1995  
2010  
MINIMUM TEMPERATURE (F) 47 25 1964  
 
SUNRISE AND SUNSET  
OCTOBER 12 2024.......SUNRISE 7:17 AM EDT SUNSET 6:35 PM EDT  
OCTOBER 13 2024.......SUNRISE 7:18 AM EDT SUNSET 6:33 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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