227  
CDUS41 KLWX 280524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1224 AM EST WED NOV 28 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 27 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 42 115 PM 70 2011 53 -11 60  
MINIMUM 33 1105 PM 11 1974 32 1 30  
AVERAGE 38 42 -4 45  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.59 1993 0.11 -0.11 0.00  
MONTH TO DATE 7.67 3.06 4.61 1.96  
SINCE SEP 1 17.71 10.23 7.48 6.86  
SINCE JAN 1 60.97 38.23 22.74 39.86  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.9 1978 0.1 -0.1  
MONTH TO DATE 3.0 0.4 2.6  
SINCE JUL 1 3.0 0.4 2.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 27 23 4 20  
MONTH TO DATE 571 489 82 520  
SINCE SEP 1 867 843 24 740  
SINCE JUL 1 867 845 22 741  
 
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 29 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 17.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 64 100 AM  
LOWEST 50 900 AM  
AVERAGE 57  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 71 1998  
1990  
MINIMUM TEMPERATURE (F) 32 19 1996  
 
 
SUNRISE AND SUNSET  
NOVEMBER 28 2018......SUNRISE 707 AM EST SUNSET 449 PM EST  
NOVEMBER 29 2018......SUNRISE 708 AM EST SUNSET 449 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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