439  
CDUS41 KLWX 022126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
526 PM EDT SUN MAY 02 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 2 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 85 3:04 PM 88 1992 72 13 72  
2010  
2018  
MINIMUM 50 1:22 AM 34 1960 47 3 48  
1979  
AVERAGE 68 59 9 60  
 
PRECIPITATION (IN)  
TODAY 0.00 1.39 2016 0.12 -0.12 0.00  
MONTH TO DATE 0.00 0.25 -0.25 0.18  
SINCE MAR 1 4.55 7.10 -2.55 7.73  
SINCE JAN 1 10.71 12.52 -1.81 14.30  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 T 3.1 -3.1 T  
SINCE JUL 1 12.0 22.0 -10.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 7 -7 5  
MONTH TO DATE 7 14 -7 13  
SINCE MAR 1 822 996 -174 843  
SINCE JUL 1 4015 4586 -571 3987  
 
COOLING  
TODAY 3 1 2 0  
MONTH TO DATE 3 2 1 0  
SINCE MAR 1 29 22 7 3  
SINCE JAN 1 29 22 7 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 11.2  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 54 6:00 AM  
LOWEST 27 2:00 PM  
AVERAGE 41  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 92 1965  
MINIMUM TEMPERATURE (F) 47 32 1963  
2005  
 
SUNRISE AND SUNSET  
MAY 2 2021...........SUNRISE 6:10 AM EDT SUNSET 8:04 PM EDT  
MAY 3 2021...........SUNRISE 6:09 AM EDT SUNSET 8:05 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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