985  
CDUS41 KLWX 202123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT MON MAY 20 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 20 2024  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 81 3:56 PM 93 1996 76 5 82  
MINIMUM 54 3:24 AM 36 2002 54 0 51  
AVERAGE 68 65 3 67  
 
PRECIPITATION (IN)  
TODAY T 1.86 2005 0.16 -0.16 0.29  
MONTH TO DATE 3.16 2.99 0.17 1.04  
SINCE MAR 1 8.79 9.96 -1.17 5.91  
SINCE JAN 1 16.24 15.51 0.73 9.54  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 T 4.0 -4.0 T  
SINCE JUL 1 11.7 21.0 -9.3 0.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 0  
MONTH TO DATE 47 90 -43 95  
SINCE MAR 1 726 1057 -331 878  
SINCE JUL 1 3690 4567 -877 3842  
 
COOLING  
TODAY 3 3 0 2  
MONTH TO DATE 49 41 8 18  
SINCE MAR 1 93 63 30 63  
SINCE JAN 1 96 63 33 63    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 2.8  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 4:00 AM  
LOWEST 49 4:00 PM  
AVERAGE 73  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 76 92 1996  
2022  
MINIMUM TEMPERATURE (F) 55 33 1992  
 
SUNRISE AND SUNSET  
MAY 20 2024...........SUNRISE 5:53 AM EDT SUNSET 8:21 PM EDT  
MAY 21 2024...........SUNRISE 5:52 AM EDT SUNSET 8:21 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