639  
CDUS41 KLWX 242122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
422 PM EST TUE NOV 24 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 24 2020
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 51 3:03 PM 74 1979 54 -3 51  
MINIMUM 33 1:12 AM 9 1989 33 0 32  
AVERAGE 42 44 -2 42  
 
PRECIPITATION (IN)  
TODAY 0.00 1.81 1971 0.11 -0.11 0.42  
MONTH TO DATE 2.09 2.72 -0.63 1.60  
SINCE SEP 1 7.91 9.89 -1.98 7.98  
SINCE JAN 1 42.13 37.89 4.24 37.82  
 
SNOWFALL (IN)  
TODAY 0.0 2.9 1971 0.1 -0.1 0.0  
MONTH TO DATE 0.0 0.3 -0.3 T  
SINCE SEP 1 0.0 0.3 -0.3 T  
SINCE JUL 1 0.0 0.3 -0.3 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 23 22 1 23  
MONTH TO DATE 314 422 -108 556  
SINCE SEP 1 581 776 -195 741  
SINCE JUL 1 581 778 -197 741  
 
COOLING  
TODAY 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 12 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 4.9  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 5:00 AM  
LOWEST 39 3:00 PM  
AVERAGE 56  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 77 1979  
MINIMUM TEMPERATURE (F) 33 15 1970  
 
SUNRISE AND SUNSET  
NOVEMBER 24 2020......SUNRISE 7:03 AM EST SUNSET 4:50 PM EST  
NOVEMBER 25 2020......SUNRISE 7:04 AM EST SUNSET 4:50 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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