322  
CDUS41 KLWX 152123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT MON MAR 15 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 15 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 46 3:48 PM 84 2012 55 -9 49  
MINIMUM 30 6:05 AM -1 1993 33 -3 32  
AVERAGE 38 44 -6 41  
 
PRECIPITATION (IN)  
TODAY 0.00 0.89 1967 0.11 -0.11 0.06  
MONTH TO DATE 0.18 1.47 -1.29 0.58  
SINCE MAR 1 0.18 1.47 -1.29 0.58  
SINCE JAN 1 6.34 6.89 -0.55 7.15  
 
SNOWFALL (IN)  
TODAY 0.0 1.4 1999 0.1 -0.1 0.0  
MONTH TO DATE 0.0 1.8 -1.8 T  
SINCE MAR 1 0.0 1.8 -1.8 T  
SINCE JUL 1 12.0 20.7 -8.7 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 27 21 6 24  
MONTH TO DATE 296 353 -57 237  
SINCE MAR 1 296 353 -57 237  
SINCE JUL 1 3489 3943 -454 3381  
 
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 23 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 10.6  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 37 6:00 AM  
LOWEST 19 3:00 PM  
AVERAGE 28  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 81 1990  
MINIMUM TEMPERATURE (F) 33 16 1969  
 
SUNRISE AND SUNSET  
MARCH 15 2021.........SUNRISE 7:21 AM EDT SUNSET 7:17 PM EDT  
MARCH 16 2021.........SUNRISE 7:19 AM EDT SUNSET 7:18 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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