096  
CDUS41 KLWX 132124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT WED OCT 13 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 13 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 76 3:48 PM 84 1989 69 7 72  
MINIMUM 59 4:41 AM 30 1987 46 13 47  
1988  
2012  
AVERAGE 68 58 10 60  
 
PRECIPITATION (IN)  
TODAY 0.00 1.92 2011 0.11 -0.11 T  
MONTH TO DATE 0.03 1.58 -1.55 1.32  
SINCE SEP 1 4.75 5.52 -0.77 3.60  
SINCE JAN 1 29.34 34.74 -5.40 37.82  
 
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 8 -8 5  
MONTH TO DATE 5 82 -77 76  
SINCE SEP 1 22 127 -105 137  
SINCE JUL 1 22 128 -106 137  
 
COOLING  
TODAY 3 1 2 0  
MONTH TO DATE 45 18 27 4  
SINCE SEP 1 216 170 46 139  
SINCE JAN 1 1468 1226 242 1391    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 2.1  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 6:00 AM  
LOWEST 69 3:00 PM  
AVERAGE 85  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 86 1975  
MINIMUM TEMPERATURE (F) 46 23 1988  
 
SUNRISE AND SUNSET  
OCTOBER 13 2021.......SUNRISE 7:18 AM EDT SUNSET 6:34 PM EDT  
OCTOBER 14 2021.......SUNRISE 7:19 AM EDT SUNSET 6:32 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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