960  
CDUS41 KLWX 172122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT WED MAR 17 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 17 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 50 3:59 PM 77 1963 56 -6 64  
MINIMUM 41 5:43 AM 16 1970 33 8 43  
AVERAGE 46 44 2 54  
 
PRECIPITATION (IN)  
TODAY T 1.14 1993 0.11 -0.11 T  
MONTH TO DATE 0.18 1.70 -1.52 0.58  
SINCE MAR 1 0.18 1.70 -1.52 0.58  
SINCE JAN 1 6.34 7.12 -0.78 7.15  
 
SNOWFALL (IN)  
TODAY 0.0 4.5 2014 0.1 -0.1 0.0  
MONTH TO DATE T 2.0 -2.0 T  
SINCE MAR 1 T 2.0 -2.0 T  
SINCE JUL 1 12.0 20.9 -8.9 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 19 21 -2 11  
MONTH TO DATE 338 395 -57 271  
SINCE MAR 1 338 395 -57 271  
SINCE JUL 1 3531 3985 -454 3415  
 
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 9 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 2.4  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 AM  
LOWEST 68 4:00 PM  
AVERAGE 81  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 80 1989  
MINIMUM TEMPERATURE (F) 33 13 1976  
 
SUNRISE AND SUNSET  
MARCH 17 2021.........SUNRISE 7:18 AM EDT SUNSET 7:19 PM EDT  
MARCH 18 2021.........SUNRISE 7:16 AM EDT SUNSET 7:20 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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