982  
CDUS41 KLWX 290523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT SUN JUL 29 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 28 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 85 428 PM 99 1993 88 -3 78  
MINIMUM 67 440 AM 47 1977 66 1 69  
AVERAGE 76 77 -1 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.65 2000 0.12 -0.12 1.46  
MONTH TO DATE 9.75 3.30 6.45 8.64  
SINCE JUN 1 13.92 7.28 6.64 9.92  
SINCE JAN 1 34.57 24.10 10.47 29.01  
 
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 11 12 -1 9  
MONTH TO DATE 340 331 9 385  
SINCE JUN 1 581 568 13 641  
SINCE JAN 1 773 660 113 778    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 5.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 40 300 PM  
AVERAGE 70  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 103 2011  
MINIMUM TEMPERATURE (F) 66 52 2014  
 
 
SUNRISE AND SUNSET  
JULY 29 2018..........SUNRISE 608 AM EDT SUNSET 824 PM EDT  
JULY 30 2018..........SUNRISE 609 AM EDT SUNSET 823 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