567  
CDUS41 KLWX 150522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
122 AM EDT MON MAR 15 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 14 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 65 2:39 PM 88 1990 55 10 58  
MINIMUM 33 5:28 AM 15 1968 32 1 36  
1993  
AVERAGE 49 43 6 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.99 1999 0.11 -0.11 0.15  
MONTH TO DATE 0.18 1.36 -1.18 0.52  
SINCE MAR 1 0.18 1.36 -1.18 0.52  
SINCE JAN 1 6.34 6.78 -0.44 7.09  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 2017 0.1 -0.1 T  
MONTH TO DATE 0.0 1.7 -1.7 T  
SINCE MAR 1 0.0 1.7 -1.7 T  
SINCE JUL 1 12.0 20.6 -8.6 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 22 -6 18  
MONTH TO DATE 269 332 -63 213  
SINCE MAR 1 269 332 -63 213  
SINCE JUL 1 3462 3922 -460 3357  
 
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 35 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 15.2  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 56 5:00 AM  
LOWEST 16 7:00 PM  
AVERAGE 36  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 84 2012  
MINIMUM TEMPERATURE (F) 33 -1 1993  
 
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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