640  
CDUS41 KLWX 072124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT THU JUN 7 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 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 80 332 PM 96 1999 81 -1 69  
MINIMUM 57 417 AM 45 1977 59 -2 53  
AVERAGE 69 70 -1 61  
 
PRECIPITATION (IN)  
TODAY 0.00 1.88 1989 0.14 -0.14 0.00  
MONTH TO DATE 2.07 0.98 1.09 0.18  
SINCE JUN 1 2.07 0.98 1.09 0.18  
SINCE JAN 1 22.72 17.80 4.92 19.27  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 0 1 -1 4  
MONTH TO DATE 1 9 -8 4  
SINCE JUN 1 1 9 -8 4  
SINCE JUL 1 4562 4711 -149 3856  
 
COOLING  
TODAY 4 6 -2 0  
MONTH TO DATE 35 38 -3 22  
SINCE JUN 1 35 38 -3 22  
SINCE JAN 1 227 130 97 159    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 400 AM  
LOWEST 48 300 PM  
AVERAGE 67  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 97 2007  
MINIMUM TEMPERATURE (F) 59 36 1977  
 
 
SUNRISE AND SUNSET  
JUNE 7 2018..........SUNRISE 544 AM EDT SUNSET 833 PM EDT  
JUNE 8 2018..........SUNRISE 544 AM EDT SUNSET 834 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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