896  
CDUS41 KLWX 220529  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
129 AM EDT THU AUG 22 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 21 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 92 411 PM 96 1962 86 6 79  
MINIMUM 69 548 AM 47 1976 64 5 71  
AVERAGE 81 75 6 75  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.72 2018 0.10 -0.10 2.72  
MONTH TO DATE 4.31 2.47 1.84 4.53  
SINCE JUN 1 9.48 10.12 -0.64 19.91  
SINCE JAN 1 29.36 26.94 2.42 40.56  
 
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 9 15 -6 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 16 10 6 10  
MONTH TO DATE 286 229 57 269  
SINCE JUN 1 986 829 157 877  
SINCE JAN 1 1165 921 244 1069    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 4.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1200 AM  
LOWEST 49 300 PM  
AVERAGE 70  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 101 1983  
MINIMUM TEMPERATURE (F) 64 51 1976  
1969  
 
 
SUNRISE AND SUNSET  
AUGUST 22 2019........SUNRISE 629 AM EDT SUNSET 755 PM EDT  
AUGUST 23 2019........SUNRISE 630 AM EDT SUNSET 754 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