958  
CDUS41 KLWX 102134  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
434 PM EST WED MAR 10 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 10 2021
 
 
VALID TODAY AS OF 0400 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 3:45 PM 80 2016 53 19 73  
MINIMUM 35 5:26 AM 7 1996 31 4 54  
AVERAGE 54 42 12 64  
 
PRECIPITATION (IN)  
TODAY 0.00 1.41 2011 0.09 -0.09 0.02  
MONTH TO DATE 0.18 0.95 -0.77 0.15  
SINCE MAR 1 0.18 0.95 -0.77 0.15  
SINCE JAN 1 6.34 6.37 -0.03 6.72  
 
SNOWFALL (IN)  
TODAY 0.0 1.4 1993 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.3 -1.3 0.0  
SINCE MAR 1 0.0 1.3 -1.3 0.0  
SINCE JUL 1 12.0 20.2 -8.2 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 11 23 -12 1  
MONTH TO DATE 234 243 -9 164  
SINCE MAR 1 234 243 -9 164  
SINCE JUL 1 3427 3833 -406 3308  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 4.2  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 4:00 AM  
LOWEST 21 3:00 PM  
AVERAGE 50  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 77 1990  
MINIMUM TEMPERATURE (F) 31 13 1996  
 
SUNRISE AND SUNSET  
MARCH 10 2021.........SUNRISE 6:28 AM EST SUNSET 6:12 PM EST  
MARCH 11 2021.........SUNRISE 6:27 AM EST SUNSET 6:13 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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