026  
CDUS41 KLWX 202131  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
431 PM EST FRI NOV 20 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 20 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 66 3:48 PM 79 1985 56 10 52  
MINIMUM 33 6:48 AM 18 1980 34 -1 44  
AVERAGE 50 45 5 48  
 
PRECIPITATION (IN)  
TODAY 0.00 0.75 1983 0.11 -0.11 0.00  
MONTH TO DATE 2.03 2.26 -0.23 0.42  
SINCE SEP 1 7.85 9.43 -1.58 6.80  
SINCE JAN 1 42.07 37.43 4.64 36.64  
 
SNOWFALL (IN)  
TODAY 0.0 T 1969 0.0 0.0 0.0  
1987  
2000  
MONTH TO DATE 0.0 0.1 -0.1 T  
SINCE SEP 1 0.0 0.1 -0.1 T  
SINCE JUL 1 0.0 0.1 -0.1 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 15 20 -5 17  
MONTH TO DATE 252 338 -86 458  
SINCE SEP 1 519 692 -173 643  
SINCE JUL 1 519 694 -175 643  
 
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 13 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 7:00 AM  
LOWEST 34 4:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 76 2007  
MINIMUM TEMPERATURE (F) 34 16 1969  
 
SUNRISE AND SUNSET  
NOVEMBER 20 2020......SUNRISE 6:59 AM EST SUNSET 4:52 PM EST  
NOVEMBER 21 2020......SUNRISE 7:00 AM EST SUNSET 4:52 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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