166  
CDUS41 KLWX 190523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST MON NOV 19 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 18 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 50 335 PM 76 1963 57 -7 62  
MINIMUM 28 547 AM 18 2014 35 -7 31  
AVERAGE 39 46 -7 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.57 1968 0.12 -0.12 0.01  
MONTH TO DATE 5.87 2.03 3.84 1.87  
SINCE SEP 1 15.91 9.20 6.71 6.77  
SINCE JAN 1 59.17 37.20 21.97 39.77  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2002 0.0 0.0  
2001  
MONTH TO DATE 3.0 0.1 2.9  
SINCE JUL 1 3.0 0.1 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 19 7 18  
MONTH TO DATE 348 298 50 327  
SINCE SEP 1 644 652 -8 547  
SINCE JUL 1 644 654 -10 548  
 
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 13 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 3.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 65 1100 AM  
AVERAGE 83  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 76 1985  
MINIMUM TEMPERATURE (F) 35 13 2014  
 
 
SUNRISE AND SUNSET  
NOVEMBER 19 2018......SUNRISE 657 AM EST SUNSET 453 PM EST  
NOVEMBER 20 2018......SUNRISE 658 AM EST SUNSET 452 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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