640  
CDUS41 KLWX 150524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST THU NOV 15 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 14 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 43 1233 PM 80 1985 58 -15 49  
MINIMUM 36 837 AM 13 1986 36 0 34  
AVERAGE 40 47 -7 42  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.90 1972 0.11 -0.11 0.00  
MONTH TO DATE 4.35 1.56 2.79 1.86  
SINCE SEP 1 14.39 8.73 5.66 6.76  
SINCE JAN 1 57.65 36.73 20.92 39.76  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.7 1996 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1  
SINCE JUL 1 0.0 0.1 -0.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 18 7 23  
MONTH TO DATE 241 223 18 247  
SINCE SEP 1 537 577 -40 467  
SINCE JUL 1 537 579 -42 468  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE SEP 1 338 160 178 220  
SINCE JAN 1 1522 1176 346 1281    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 9.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 1200 AM  
LOWEST 45 300 PM  
AVERAGE 56  
   
......................................................
 
 
 
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 2018......SUNRISE 653 AM EST SUNSET 456 PM EST  
NOVEMBER 16 2018......SUNRISE 654 AM EST SUNSET 455 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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