170  
CDUS41 KLWX 150529  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1229 AM EST SUN NOV 15 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 14 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 60 3:44 PM 80 1985 58 2 42  
MINIMUM 37 6:43 AM 13 1986 36 1 17  
AVERAGE 49 47 2 30  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.90 1972 0.11 -0.11 0.00  
MONTH TO DATE 2.03 1.56 0.47 0.29  
SINCE SEP 1 7.85 8.73 -0.88 6.67  
SINCE JAN 1 42.07 36.73 5.34 36.51  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.7 1996 0.0 0.0 0.0  
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 16 18 -2 35  
MONTH TO DATE 137 223 -86 322  
SINCE SEP 1 404 577 -173 507  
SINCE JUL 1 404 579 -175 507  
 
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 13 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 4.1  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 5:00 AM  
LOWEST 37 3:00 PM  
AVERAGE 61  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 81 1993  
MINIMUM TEMPERATURE (F) 36 19 1986  
 
SUNRISE AND SUNSET  
NOVEMBER 15 2020......SUNRISE 6:53 AM EST SUNSET 4:55 PM EST  
NOVEMBER 16 2020......SUNRISE 6:54 AM EST SUNSET 4:55 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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