125  
CDUS41 KLWX 082124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT THU APR 08 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 8 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 72 2:53 PM 87 1991 64 8 78  
MINIMUM 53 5:03 AM 24 1970 40 13 51  
AVERAGE 63 52 11 65  
 
PRECIPITATION (IN)  
TODAY 0.00 1.15 2000 0.12 -0.12 0.06  
MONTH TO DATE 0.27 0.96 -0.69 0.36  
SINCE MAR 1 2.54 4.34 -1.80 2.35  
SINCE JAN 1 8.70 9.76 -1.06 8.92  
 
SNOWFALL (IN)  
TODAY 0.0 T 1972 0.1 -0.1 0.0  
2000  
MONTH TO DATE T 0.2 -0.2 0.0  
SINCE MAR 1 T 3.0 -3.0 T  
SINCE JUL 1 12.0 21.9 -9.9 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 2 13 -11 0  
MONTH TO DATE 102 116 -14 73  
SINCE MAR 1 617 763 -146 521  
SINCE JUL 1 3810 4353 -543 3665  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 4 3 1 3  
SINCE JAN 1 4 3 1 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 53 8:00 AM  
LOWEST 30 3:00 AM  
AVERAGE 42  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 89 2001  
MINIMUM TEMPERATURE (F) 40 23 1977  
 
SUNRISE AND SUNSET  
APRIL 8 2021.........SUNRISE 6:43 AM EDT SUNSET 7:40 PM EDT  
APRIL 9 2021.........SUNRISE 6:42 AM EDT SUNSET 7:41 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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