946  
CDUS41 KLWX 290532  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1232 AM EST SUN NOV 29 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 28 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 59 3:06 PM 71 1990 52 7 51  
1998  
MINIMUM 33 11:42 PM 19 1996 32 1 41  
AVERAGE 46 42 4 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.23 1993 0.11 -0.11 0.00  
MONTH TO DATE 2.23 3.17 -0.94 1.62  
SINCE SEP 1 8.05 10.34 -2.29 8.00  
SINCE JAN 1 42.27 38.34 3.93 37.84  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1974 0.0 0.0 0.0  
1995  
2014  
MONTH TO DATE 0.0 0.4 -0.4 T  
SINCE SEP 1 0.0 0.4 -0.4 T  
SINCE JUL 1 0.0 0.4 -0.4 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 19 23 -4 19  
MONTH TO DATE 368 512 -144 633  
SINCE SEP 1 635 866 -231 818  
SINCE JUL 1 635 868 -233 818  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE SEP 1 154 160 -6 289  
SINCE JAN 1 1406 1176 230 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 8:00 AM  
LOWEST 34 3:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 73 1998  
MINIMUM TEMPERATURE (F) 32 17 1967  
 
SUNRISE AND SUNSET  
NOVEMBER 29 2020......SUNRISE 7:08 AM EST SUNSET 4:48 PM EST  
NOVEMBER 30 2020......SUNRISE 7:09 AM EST SUNSET 4:48 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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