937  
CDUS41 KLWX 242124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT SAT APR 24 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 24 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 64 12:57 PM 85 1990 70 -6 58  
1994  
2011  
MINIMUM 33 5:16 AM 30 1989 45 -12 46  
AVERAGE 49 57 -8 52  
 
PRECIPITATION (IN)  
TODAY 0.00 1.25 1983 0.12 -0.12 0.21  
MONTH TO DATE 1.51 2.77 -1.26 3.55  
SINCE MAR 1 3.78 6.15 -2.37 5.54  
SINCE JAN 1 9.94 11.57 -1.63 12.11  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE T 0.3 -0.3 T  
SINCE MAR 1 T 3.1 -3.1 T  
SINCE JUL 1 12.0 22.0 -10.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 16 9 7 13  
MONTH TO DATE 278 290 -12 310  
SINCE MAR 1 793 937 -144 758  
SINCE JUL 1 3986 4527 -541 3902  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 5 12 -7 0  
SINCE MAR 1 9 15 -6 3  
SINCE JAN 1 9 15 -6 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 3.0  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 4:00 AM  
LOWEST 29 12:00 PM  
AVERAGE 59  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 93 1960  
MINIMUM TEMPERATURE (F) 45 29 1969  
 
SUNRISE AND SUNSET  
APRIL 24 2021.........SUNRISE 6:20 AM EDT SUNSET 7:56 PM EDT  
APRIL 25 2021.........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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