954  
CDUS41 KLWX 110524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST WED NOV 11 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 10 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 77R 1:57 PM 75 1985 60 17 57  
MINIMUM 50 4:59 AM 21 2003 37 13 29  
AVERAGE 64 48 16 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.08 1990 0.11 -0.11 0.00  
MONTH TO DATE 0.34 1.15 -0.81 0.13  
SINCE SEP 1 6.16 8.32 -2.16 6.51  
SINCE JAN 1 40.38 36.32 4.06 36.35  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.6 1968 0.1 -0.1 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.1 -0.1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 1 17 -16 22  
MONTH TO DATE 104 153 -49 214  
SINCE SEP 1 371 507 -136 399  
SINCE JUL 1 371 509 -138 399  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 153 160 -7 289  
SINCE JAN 1 1405 1176 229 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 7:00 AM  
LOWEST 54 2:00 PM  
AVERAGE 76  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 78 2006  
MINIMUM TEMPERATURE (F) 37 16 1973  
 
SUNRISE AND SUNSET  
NOVEMBER 11 2020......SUNRISE 6:49 AM EST SUNSET 4:59 PM EST  
NOVEMBER 12 2020......SUNRISE 6:50 AM EST SUNSET 4:58 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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