482  
CDUS41 KLWX 260525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
125 AM EDT SAT JUN 26 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 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 81 4:23 PM 97 1966 86 -5 84  
MINIMUM 54 4:52 AM 44 1979 65 -11 63  
AVERAGE 68 75 -7 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 5.94 2006 0.14 -0.14 T  
MONTH TO DATE 3.23 3.59 -0.36 4.94  
SINCE JUN 1 3.23 3.59 -0.36 4.94  
SINCE JAN 1 16.81 20.83 -4.02 21.46  
 
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 JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 12.0 21.0 -9.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 6 11 -5 5  
SINCE JUN 1 6 11 -5 5  
SINCE JUL 1 4158 4603 -445 4154  
 
COOLING  
YESTERDAY 3 10 -7 9  
MONTH TO DATE 208 184 24 209  
SINCE JUN 1 208 184 24 209  
SINCE JAN 1 317 290 27 286    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 7.1  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 5:00 AM  
LOWEST 48 2:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 95 1998  
MINIMUM TEMPERATURE (F) 65 42 1979  
 
SUNRISE AND SUNSET  
JUNE 26 2021..........SUNRISE 5:46 AM EDT SUNSET 8:39 PM EDT  
JUNE 27 2021..........SUNRISE 5:46 AM EDT SUNSET 8:39 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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