481  
CDUS41 KLWX 270532  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
132 AM EDT SUN JUN 27 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 26 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 86 4:47 PM 95 1998 86 0 88  
MINIMUM 71 5:17 AM 42 1979 65 6 58  
AVERAGE 79 75 4 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.07 1.92 2006 0.15 -0.08 0.00  
MONTH TO DATE 3.30 3.74 -0.44 4.94  
SINCE JUN 1 3.30 3.74 -0.44 4.94  
SINCE JAN 1 16.88 20.98 -4.10 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 14 10 4 8  
MONTH TO DATE 222 194 28 217  
SINCE JUN 1 222 194 28 217  
SINCE JAN 1 331 300 31 294    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 7.3  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 9:00 AM  
LOWEST 53 3:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 100 1964  
MINIMUM TEMPERATURE (F) 65 44 1979  
 
SUNRISE AND SUNSET  
JUNE 27 2021..........SUNRISE 5:46 AM EDT SUNSET 8:39 PM EDT  
JUNE 28 2021..........SUNRISE 5:47 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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