986  
CDUS41 KLWX 042140  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
540 PM EDT THU JUL 04 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 4 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 95 1:46 PM 97 1999 87 8 92  
2002  
MINIMUM 72 5:25 AM 48 1986 66 6 69  
AVERAGE 84 77 7 81  
 
PRECIPITATION (IN)  
TODAY 0.67 1.87 2001 0.14 0.53 T  
MONTH TO DATE 0.67 0.56 0.11 0.99  
SINCE JUN 1 1.36 4.86 -3.50 3.29  
SINCE JAN 1 18.66 22.10 -3.44 13.27  
 
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 19 12 7 16  
MONTH TO DATE 45 46 -1 65  
SINCE JUN 1 399 284 115 247  
SINCE JAN 1 582 390 192 321    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 4:00 PM  
LOWEST 47 11:00 AM  
AVERAGE 71  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 99 1990  
1999  
MINIMUM TEMPERATURE (F) 66 50 1971  
1996  
 
SUNRISE AND SUNSET  
JULY 4 2024..........SUNRISE 5:50 AM EDT SUNSET 8:39 PM EDT  
JULY 5 2024..........SUNRISE 5:50 AM EDT SUNSET 8:38 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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