541  
CDUS41 KLWX 152124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT WED MAY 15 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 15 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 67 3:35 PM 90 1962 75 -8 75  
MINIMUM 60 7:10 AM 37 1984 53 7 54  
2016  
AVERAGE 64 64 0 65  
 
PRECIPITATION (IN)  
TODAY 0.07 2.40 2003 0.16 -0.09 0.00  
MONTH TO DATE 2.46 2.22 0.24 0.75  
SINCE MAR 1 8.09 9.19 -1.10 5.62  
SINCE JAN 1 15.54 14.74 0.80 9.25  
 
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 1 4 -3 0  
MONTH TO DATE 43 73 -30 84  
SINCE MAR 1 722 1040 -318 867  
SINCE JUL 1 3686 4550 -864 3831  
 
COOLING  
TODAY 0 2 -2 0  
MONTH TO DATE 42 26 16 14  
SINCE MAR 1 86 48 38 59  
SINCE JAN 1 89 48 41 59    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 8:00 AM  
LOWEST 76 3:00 PM  
AVERAGE 85  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 90 1998  
MINIMUM TEMPERATURE (F) 53 35 2000  
 
SUNRISE AND SUNSET  
MAY 15 2024...........SUNRISE 5:57 AM EDT SUNSET 8:16 PM EDT  
MAY 16 2024...........SUNRISE 5:56 AM EDT SUNSET 8:17 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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