560  
CDUS41 KLWX 312124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT WED MAR 31 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 31 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 65 8:57 AM 85 1998 61 4 54  
MINIMUM 53 3:20 AM 17 1964 38 15 42  
AVERAGE 59 49 10 48  
 
PRECIPITATION (IN)  
TODAY 0.43 1.55 2017 0.12 0.31 0.15  
MONTH TO DATE 2.09 3.38 -1.29 1.99  
SINCE MAR 1 2.09 3.38 -1.29 1.99  
SINCE JAN 1 8.25 8.80 -0.55 8.56  
 
SNOWFALL (IN)  
TODAY 0.0 1.7 1964 0.0 0.0 0.0  
MONTH TO DATE T 2.8 -2.8 T  
SINCE MAR 1 T 2.8 -2.8 T  
SINCE JUL 1 12.0 21.7 -9.7 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 6 16 -10 17  
MONTH TO DATE 513 648 -135 448  
SINCE MAR 1 513 648 -135 448  
SINCE JUL 1 3706 4238 -532 3592  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 4 3 1 3  
SINCE MAR 1 4 3 1 3  
SINCE JAN 1 4 3 1 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 7.7  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 12:00 PM  
LOWEST 67 12:00 AM  
AVERAGE 82  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 85 1978  
MINIMUM TEMPERATURE (F) 38 17 1969  
 
SUNRISE AND SUNSET  
MARCH 31 2021.........SUNRISE 6:56 AM EDT SUNSET 7:33 PM EDT  
APRIL 1 2021.........SUNRISE 6:54 AM EDT SUNSET 7:34 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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