023  
CDUS41 KLWX 112136  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
535 PM EDT SAT MAY 11 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 11 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 66 1053 AM 90 1993 74 -8 82  
MINIMUM 61 823 AM 29 1966 50 11 53  
AVERAGE 64 62 2 68  
 
PRECIPITATION (IN)  
TODAY T 3.73 2008 0.14 -0.14 0.00  
MONTH TO DATE 2.57 1.49 1.08 0.24  
SINCE MAR 1 9.94 8.34 1.60 5.58  
SINCE JAN 1 17.40 13.76 3.64 11.97  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 26.5 22.0 4.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 1 5 -4 0  
MONTH TO DATE 7 66 -59 14  
SINCE MAR 1 889 1048 -159 1203  
SINCE JUL 1 4394 4638 -244 4554  
 
COOLING  
TODAY 0 2 -2 3  
MONTH TO DATE 31 13 18 33  
SINCE MAR 1 53 33 20 48  
SINCE JAN 1 53 33 20 53    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 7.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1200 AM  
LOWEST 58 1100 AM  
AVERAGE 76  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 90 2018  
MINIMUM TEMPERATURE (F) 50 34 1969  
 
 
SUNRISE AND SUNSET  
MAY 11 2019...........SUNRISE 601 AM EDT SUNSET 812 PM EDT  
MAY 12 2019...........SUNRISE 600 AM EDT SUNSET 813 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