053  
CDUS41 KLWX 160524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT THU MAY 16 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 15 2024  
 
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)  
YESTERDAY  
MAXIMUM 67 3:35 PM 90 1962 75 -8 75  
MINIMUM 57 11:59 PM 37 1984 53 4 54  
2016  
AVERAGE 62 64 -2 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.08 2.40 2003 0.16 -0.08 0.00  
MONTH TO DATE 2.47 2.22 0.25 0.75  
SINCE MAR 1 8.10 9.19 -1.09 5.62  
SINCE JAN 1 15.55 14.74 0.81 9.25  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 3 4 -1 0  
MONTH TO DATE 45 73 -28 84  
SINCE MAR 1 724 1040 -316 867  
SINCE JUL 1 3688 4550 -862 3831  
 
COOLING  
YESTERDAY 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 6.1  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
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 TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 90 1998  
MINIMUM TEMPERATURE (F) 53 35 2000  
 
SUNRISE AND SUNSET  
MAY 16 2024...........SUNRISE 5:56 AM EDT SUNSET 8:17 PM EDT  
MAY 17 2024...........SUNRISE 5:55 AM EDT SUNSET 8:18 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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