248  
CDUS41 KLWX 240524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT WED APR 24 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 23 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 74 5:03 PM 88 2001 70 4 64  
MINIMUM 34 5:22 AM 30 1989 46 -12 42  
AVERAGE 54 58 -4 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.67 1963 0.13 -0.13 T  
MONTH TO DATE 1.45 2.58 -1.13 0.81  
SINCE MAR 1 5.34 6.08 -0.74 2.38  
SINCE JAN 1 12.79 11.63 1.16 6.01  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1986 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  
YESTERDAY 11 8 3 12  
MONTH TO DATE 184 270 -86 145  
SINCE MAR 1 648 917 -269 715  
SINCE JUL 1 3612 4427 -815 3679  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 19 12 7 44  
SINCE MAR 1 19 14 5 45  
SINCE JAN 1 22 14 8 45    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 7.7  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 6:00 AM  
LOWEST 20 3:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 85 1990  
1994  
2011  
MINIMUM TEMPERATURE (F) 46 30 1989  
 
SUNRISE AND SUNSET  
APRIL 24 2024.........SUNRISE 6:20 AM EDT SUNSET 7:56 PM EDT  
APRIL 25 2024.........SUNRISE 6:19 AM EDT SUNSET 7:57 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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