323  
CDUS41 KLWX 172126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
526 PM EDT WED JUL 17 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 17 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 98 2:17 PM 100 1988 88 10 90  
1997  
MINIMUM 76 5:08 AM 55 1976 67 9 68  
2014  
AVERAGE 87 78 9 79  
 
PRECIPITATION (IN)  
TODAY T 1.11 2018 0.14 -0.14 0.00  
MONTH TO DATE 1.74 2.32 -0.58 3.44  
SINCE JUN 1 2.43 6.62 -4.19 5.74  
SINCE JAN 1 19.73 23.86 -4.13 15.72  
 
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 JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 13 -13 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 22 12 10 14  
MONTH TO DATE 302 202 100 269  
SINCE JUN 1 656 440 216 451  
SINCE JAN 1 839 546 293 525    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 3.4  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 5:00 AM  
LOWEST 38 12:00 PM  
AVERAGE 62  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 101 2012  
MINIMUM TEMPERATURE (F) 67 51 1985  
 
SUNRISE AND SUNSET  
JULY 17 2024..........SUNRISE 5:59 AM EDT SUNSET 8:33 PM EDT  
JULY 18 2024..........SUNRISE 5:59 AM EDT SUNSET 8:32 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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