814  
CDUS41 KLWX 250525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT MON JUN 25 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 24 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 87 1138 AM 97 2010 86 1 86  
MINIMUM 64 501 AM 46 1979 63 1 66  
AVERAGE 76 75 1 76  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 1.76 1994 0.13 -0.10 0.27  
MONTH TO DATE 4.16 3.22 0.94 1.28  
SINCE JUN 1 4.16 3.22 0.94 1.28  
SINCE JAN 1 24.81 20.04 4.77 20.37  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 11.9 22.0 -10.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 5 13 -8 6  
SINCE JUN 1 5 13 -8 6  
SINCE JUL 1 4566 4715 -149 3858  
 
COOLING  
YESTERDAY 11 10 1 11  
MONTH TO DATE 178 175 3 213  
SINCE JUN 1 178 175 3 213  
SINCE JAN 1 370 267 103 350    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 3.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 55 1100 AM  
AVERAGE 78  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 97 1966  
MINIMUM TEMPERATURE (F) 64 44 1979  
 
 
SUNRISE AND SUNSET  
JUNE 25 2018..........SUNRISE 546 AM EDT SUNSET 839 PM EDT  
JUNE 26 2018..........SUNRISE 546 AM EDT SUNSET 839 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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