778  
CDUS41 KLWX 060527  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT SAT OCT 6 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 5 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 76 1204 AM 90 2013 72 4 85  
1967  
MINIMUM 62 823 PM 32 1970 48 14 51  
AVERAGE 69 60 9 68  
 
PRECIPITATION (IN)  
YESTERDAY T 2.04 1971 0.10 -0.10 0.00  
MONTH TO DATE T 0.52 -0.52 0.00  
SINCE SEP 1 7.36 4.44 2.92 1.75  
SINCE JAN 1 50.62 32.44 18.18 34.75  
 
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 0 6 -6 0  
MONTH TO DATE 0 29 -29 25  
SINCE SEP 1 13 85 -72 65  
SINCE JUL 1 13 87 -74 66  
 
COOLING  
YESTERDAY 4 1 3 3  
MONTH TO DATE 44 7 37 3  
SINCE SEP 1 285 148 137 158  
SINCE JAN 1 1469 1164 305 1219    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 6.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 100 AM  
LOWEST 64 300 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 89 2013  
MINIMUM TEMPERATURE (F) 47 28 1968  
 
 
SUNRISE AND SUNSET  
OCTOBER 6 2018.......SUNRISE 710 AM EDT SUNSET 645 PM EDT  
OCTOBER 7 2018.......SUNRISE 711 AM EDT SUNSET 643 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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