245  
CDUS41 KLWX 122124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
424 PM EST FRI MAR 12 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 12 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 70 3:43 PM 89 1990 54 16 66  
MINIMUM 54 4:02 AM 18 1969 32 22 39  
1984  
1998  
AVERAGE 62 43 19 53  
 
PRECIPITATION (IN)  
TODAY 0.00 1.41 1968 0.10 -0.10 0.00  
MONTH TO DATE 0.18 1.15 -0.97 0.15  
SINCE MAR 1 0.18 1.15 -0.97 0.15  
SINCE JAN 1 6.34 6.57 -0.23 6.72  
 
SNOWFALL (IN)  
TODAY 0.0 4.5 1968 0.1 -0.1 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  
TODAY 3 22 -19 12  
MONTH TO DATE 238 288 -50 193  
SINCE MAR 1 238 288 -50 193  
SINCE JUL 1 3431 3878 -447 3337  
 
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 18 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 12:00 PM  
LOWEST 44 12:00 AM  
AVERAGE 58  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 87 1990  
MINIMUM TEMPERATURE (F) 32 16 1998  
 
SUNRISE AND SUNSET  
MARCH 12 2021.........SUNRISE 6:25 AM EST SUNSET 6:14 PM EST  
MARCH 13 2021.........SUNRISE 6:24 AM EST SUNSET 6:15 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page