351  
CDUS41 KLWX 280532  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
127 AM EDT SUN OCT 28 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 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 52 225 PM 84 1963 65 -13 67  
MINIMUM 46 1255 AM 21 1988 40 6 33  
AVERAGE 49 52 -3 50  
 
PRECIPITATION (IN)  
YESTERDAY 0.60 1.89 2003 0.10 0.50 0.00  
MONTH TO DATE 2.64 2.81 -0.17 2.01  
SINCE SEP 1 10.00 6.73 3.27 3.76  
SINCE JAN 1 53.26 34.73 18.53 36.76  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 13 3 15  
MONTH TO DATE 228 244 -16 134  
SINCE SEP 1 241 300 -59 174  
SINCE JUL 1 241 302 -61 175  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 97 16 81 64  
SINCE SEP 1 338 157 181 219  
SINCE JAN 1 1522 1173 349 1280    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 10.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 100 AM  
LOWEST 80 500 PM  
AVERAGE 90  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 83 1984  
MINIMUM TEMPERATURE (F) 40 22 1976  
 
 
SUNRISE AND SUNSET  
OCTOBER 28 2018.......SUNRISE 733 AM EDT SUNSET 614 PM EDT  
OCTOBER 29 2018.......SUNRISE 734 AM EDT SUNSET 613 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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