097  
CDUS41 KLWX 260523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT WED MAY 26 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 25 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 80 5:16 PM 92 1991 77 3 77  
MINIMUM 57 4:48 AM 36 1967 56 1 61  
AVERAGE 69 66 3 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.76 1997 0.16 -0.16 0.00  
MONTH TO DATE 1.56 3.80 -2.24 2.25  
SINCE MAR 1 6.11 10.77 -4.66 9.80  
SINCE JAN 1 12.27 16.32 -4.05 16.37  
 
SNOWFALL (IN)  
YESTERDAY 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 4.0 -4.0 T  
SINCE JUL 1 12.0 21.0 -9.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 117 104 13 175  
SINCE MAR 1 932 1071 -139 1005  
SINCE JUL 1 4125 4581 -456 4149  
 
COOLING  
YESTERDAY 4 4 0 4  
MONTH TO DATE 56 59 -3 32  
SINCE MAR 1 82 81 1 35  
SINCE JAN 1 82 81 1 35    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1:00 AM  
LOWEST 60 4:00 PM  
AVERAGE 75  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 92 2007  
MINIMUM TEMPERATURE (F) 56 38 1967  
 
SUNRISE AND SUNSET  
MAY 26 2021...........SUNRISE 5:49 AM EDT SUNSET 8:25 PM EDT  
MAY 27 2021...........SUNRISE 5:48 AM EDT SUNSET 8:26 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