353  
CDUS41 KLWX 180523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST SUN NOV 18 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 17 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 48 356 PM 75 1963 57 -9 53  
MINIMUM 30 1146 PM 17 1976 35 -5 29  
AVERAGE 39 46 -7 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.03 1987 0.11 -0.11 0.00  
MONTH TO DATE 5.87 1.91 3.96 1.86  
SINCE SEP 1 15.91 9.08 6.83 6.76  
SINCE JAN 1 59.17 37.08 22.09 39.76  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1980 0.0 0.0  
1967  
1965  
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 24  
MONTH TO DATE 322 279 43 309  
SINCE SEP 1 618 633 -15 529  
SINCE JUL 1 618 635 -17 530  
 
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 20 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 6.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1100 PM  
LOWEST 54 300 PM  
AVERAGE 77  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 76 1963  
MINIMUM TEMPERATURE (F) 35 18 2014  
 
 
SUNRISE AND SUNSET  
NOVEMBER 18 2018......SUNRISE 656 AM EST SUNSET 454 PM EST  
NOVEMBER 19 2018......SUNRISE 657 AM EST SUNSET 453 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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