283  
CDUS41 KLWX 160534  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1234 AM EST MON NOV 16 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 15 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 70 6:55 PM 81 1993 58 12 53  
MINIMUM 42 3:52 AM 19 1986 36 6 25  
AVERAGE 56 47 9 39  
 
PRECIPITATION (IN)  
YESTERDAY T 1.50 2018 0.12 -0.12 0.00  
MONTH TO DATE 2.03 1.68 0.35 0.29  
SINCE SEP 1 7.85 8.85 -1.00 6.67  
SINCE JAN 1 42.07 36.85 5.22 36.51  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1976 0.0 0.0 0.0  
1992  
1995  
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  
YESTERDAY 9 18 -9 26  
MONTH TO DATE 146 241 -95 348  
SINCE SEP 1 413 595 -182 533  
SINCE JUL 1 413 597 -184 533  
 
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 31 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 10.0  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 5:00 AM  
LOWEST 47 10:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 74 2001  
2005  
MINIMUM TEMPERATURE (F) 35 14 1967  
 
SUNRISE AND SUNSET  
NOVEMBER 16 2020......SUNRISE 6:54 AM EST SUNSET 4:55 PM EST  
NOVEMBER 17 2020......SUNRISE 6:55 AM EST SUNSET 4:54 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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