222  
CDUS41 KLWX 272123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT SUN JUN 27 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 27 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 91 3:05 PM 100 1964 86 5 90  
MINIMUM 72 5:26 AM 44 1979 65 7 70  
AVERAGE 82 76 6 80  
 
PRECIPITATION (IN)  
TODAY 0.00 1.47 2006 0.14 -0.14 0.27  
2015  
MONTH TO DATE 3.30 3.88 -0.58 5.21  
SINCE JUN 1 3.30 3.88 -0.58 5.21  
SINCE JAN 1 16.88 21.12 -4.24 21.73  
 
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 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  
TODAY 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  
TODAY 17 11 6 15  
MONTH TO DATE 239 205 34 232  
SINCE JUN 1 239 205 34 232  
SINCE JAN 1 348 311 37 309    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 6:00 AM  
LOWEST 54 3:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 97 1966  
MINIMUM TEMPERATURE (F) 65 44 1970  
 
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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