115  
CDUS41 KLWX 140520  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1220 AM EST SUN MAR 14 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 13 2021
 
 
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)  
YESTERDAY  
MAXIMUM 60 4:35 PM 87 1990 54 6 75  
MINIMUM 40 10:31 PM 16 1998 32 8 50  
AVERAGE 50 43 7 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.63 1977 0.10 -0.10 0.22  
MONTH TO DATE 0.18 1.25 -1.07 0.37  
SINCE MAR 1 0.18 1.25 -1.07 0.37  
SINCE JAN 1 6.34 6.67 -0.33 6.94  
 
SNOWFALL (IN)  
YESTERDAY 0.0 13.9 1993 0.0 0.0 0.0  
MONTH TO DATE 0.0 1.6 -1.6 0.0  
SINCE MAR 1 0.0 1.6 -1.6 0.0  
SINCE JUL 1 12.0 20.5 -8.5 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 15 22 -7 2  
MONTH TO DATE 253 310 -57 195  
SINCE MAR 1 253 310 -57 195  
SINCE JUL 1 3446 3900 -454 3339  
 
COOLING  
YESTERDAY 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 18 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 38 9:00 PM  
LOWEST 17 4:00 PM  
AVERAGE 28  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 88 1990  
MINIMUM TEMPERATURE (F) 32 15 1968  
1993  
 
SUNRISE AND SUNSET  
MARCH 14 2021.........SUNRISE 7:22 AM EDT SUNSET 7:16 PM EDT  
MARCH 15 2021.........SUNRISE 7:21 AM EDT SUNSET 7:17 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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