885  
CDUS41 KLWX 240535  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
134 AM EDT TUE JUL 24 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 23 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 82 139 PM 99 2011 88 -6 87  
1991  
MINIMUM 73 703 AM 50 1983 66 7 72  
1977  
AVERAGE 78 77 1 80  
 
PRECIPITATION (IN)  
YESTERDAY 0.47 1.51 1988 0.12 0.35 0.84  
MONTH TO DATE 7.56 2.70 4.86 7.11  
SINCE JUN 1 11.73 6.68 5.05 8.39  
SINCE JAN 1 32.38 23.50 8.88 27.48  
 
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 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 5 15 -10 6  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 13 12 1 15  
MONTH TO DATE 276 271 5 332  
SINCE JUN 1 517 508 9 588  
SINCE JAN 1 709 600 109 725    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 8.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 800 PM  
LOWEST 79 1200 PM  
AVERAGE 90  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 99 2010  
MINIMUM TEMPERATURE (F) 66 48 1985  
 
 
SUNRISE AND SUNSET  
JULY 24 2018..........SUNRISE 604 AM EDT SUNSET 828 PM EDT  
JULY 25 2018..........SUNRISE 605 AM EDT SUNSET 828 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page