632  
CDUS41 KLWX 112133  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
533 PM EDT THU APR 11 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 11 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 71 1:28 PM 87 1977 65 6 79  
MINIMUM 64 6:24 AM 25 1960 42 22 41  
1970  
1971  
AVERAGE 68 54 14 60  
 
PRECIPITATION (IN)  
TODAY 0.01 0.74 2009 0.11 -0.10 0.00  
MONTH TO DATE 1.29 1.22 0.07 0.34  
SINCE MAR 1 5.18 4.72 0.46 1.91  
SINCE JAN 1 12.63 10.27 2.36 5.54  
 
SNOWFALL (IN)  
TODAY 0.0 T 1973 0.0 0.0 0.0  
1986  
MONTH TO DATE T 0.1 -0.1 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 12 -12 5  
MONTH TO DATE 119 151 -32 104  
SINCE MAR 1 583 798 -215 674  
SINCE JUL 1 3547 4308 -761 3638  
 
COOLING  
TODAY 3 0 3 0  
MONTH TO DATE 9 0 9 18  
SINCE MAR 1 9 2 7 19  
SINCE JAN 1 12 2 10 19    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 11.1  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 5:00 AM  
LOWEST 66 1:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 87 1977  
MINIMUM TEMPERATURE (F) 42 23 1982  
 
SUNRISE AND SUNSET  
APRIL 11 2024.........SUNRISE 6:38 AM EDT SUNSET 7:44 PM EDT  
APRIL 12 2024.........SUNRISE 6:37 AM EDT SUNSET 7:45 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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