377  
CDUS41 KLWX 092123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT TUE APR 09 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 9 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 79 MM 89 2001 65 14 63  
MINIMUM 49 MM 23 1977 41 8 30  
AVERAGE 64 53 11 47  
 
PRECIPITATION (IN)  
TODAY 0.00 1.02 1998 0.11 -0.11 0.00  
MONTH TO DATE 1.28 0.99 0.29 0.34  
SINCE MAR 1 5.17 4.49 0.68 1.91  
SINCE JAN 1 12.62 10.04 2.58 5.54  
 
SNOWFALL (IN)  
TODAY 0.0 2.6 1982 0.0 0.0 0.0  
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 1 13 -12 18  
MONTH TO DATE 120 127 -7 86  
SINCE MAR 1 584 774 -190 656  
SINCE JUL 1 3548 4284 -736 3620  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 18  
SINCE MAR 1 0 2 -2 19  
SINCE JAN 1 3 2 1 19    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 2.4  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 6:00 AM  
LOWEST 39 1:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 89 2013  
MINIMUM TEMPERATURE (F) 41 19 1985  
 
SUNRISE AND SUNSET  
APRIL 9 2024.........SUNRISE 6:41 AM EDT SUNSET 7:42 PM EDT  
APRIL 10 2024.........SUNRISE 6:40 AM EDT SUNSET 7:43 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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