731  
CDUS41 KLWX 072124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT SUN OCT 7 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 7 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 84 359 PM 91 2007 71 13 85  
MINIMUM 68 1255 AM 31 1988 47 21 56  
AVERAGE 76 59 17 71  
 
PRECIPITATION (IN)  
TODAY 0.00 3.50 2005 0.11 -0.11 0.00  
MONTH TO DATE T 0.74 -0.74 0.00  
SINCE SEP 1 7.36 4.66 2.70 1.75  
SINCE JAN 1 50.62 32.66 17.96 34.75  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 0 7 -7 0  
MONTH TO DATE 0 43 -43 25  
SINCE SEP 1 13 99 -86 65  
SINCE JUL 1 13 101 -88 66  
 
COOLING  
TODAY 11 1 10 6  
MONTH TO DATE 58 9 49 15  
SINCE SEP 1 299 150 149 170  
SINCE JAN 1 1483 1166 317 1231    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 5.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 65 400 PM  
AVERAGE 83  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 92 2007  
MINIMUM TEMPERATURE (F) 46 30 2001  
 
 
SUNRISE AND SUNSET  
OCTOBER 7 2018.......SUNRISE 711 AM EDT SUNSET 643 PM EDT  
OCTOBER 8 2018.......SUNRISE 712 AM EDT SUNSET 642 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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