934  
CDUS41 KLWX 042122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT SUN APR 04 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 4 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 72 3:59 PM 85 2011 63 9 62  
MINIMUM 34 2:21 AM 22 1965 39 -5 43  
2013  
AVERAGE 53 51 2 53  
 
PRECIPITATION (IN)  
TODAY 0.00 1.47 1987 0.12 -0.12 0.00  
MONTH TO DATE 0.27 0.49 -0.22 T  
SINCE MAR 1 2.54 3.87 -1.33 1.99  
SINCE JAN 1 8.70 9.29 -0.59 8.56  
 
SNOWFALL (IN)  
TODAY MM 0.2 1990 0.0 MM 0.0  
MONTH TO DATE T 0.1 -0.1 0.0  
SINCE MAR 1 T 2.9 -2.9 T  
SINCE JUL 1 12.0 21.8 -9.8 2.9  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 12 15 -3 12  
MONTH TO DATE 89 61 28 53  
SINCE MAR 1 604 708 -104 501  
SINCE JUL 1 3797 4298 -501 3645  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 4 3 1 3  
SINCE JAN 1 4 3 1 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 7.4  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 2:00 AM  
LOWEST 21 4:00 PM  
AVERAGE 45  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 86 2010  
MINIMUM TEMPERATURE (F) 39 22 1965  
 
SUNRISE AND SUNSET  
APRIL 4 2021.........SUNRISE 6:49 AM EDT SUNSET 7:37 PM EDT  
APRIL 5 2021.........SUNRISE 6:48 AM EDT SUNSET 7:38 PM EDT  
 
- 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