425  
CDUS41 KLWX 012122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT TUE JUN 01 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 1 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 79 2:57 PM 95 2011 79 0 74  
MINIMUM 52 1:13 AM 39 1984 58 -6 46  
AVERAGE 66 68 -2 60  
 
PRECIPITATION (IN)  
TODAY 0.00 1.22 1969 0.15 -0.15 0.00  
MONTH TO DATE 0.00 0.15 -0.15 0.00  
SINCE JUN 1 0.00 0.15 -0.15 0.00  
SINCE JAN 1 13.58 17.39 -3.81 16.52  
 
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 2 -2 5  
MONTH TO DATE 0 2 -2 5  
SINCE JUN 1 0 2 -2 5  
SINCE JUL 1 4152 4594 -442 4154  
 
COOLING  
TODAY 1 5 -4 0  
MONTH TO DATE 1 5 -4 0  
SINCE JUN 1 1 5 -4 0  
SINCE JAN 1 110 111 -1 77    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 6.6  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 12:00 AM  
LOWEST 48 3:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 91 1978  
2000  
2009  
MINIMUM TEMPERATURE (F) 58 41 1993  
 
SUNRISE AND SUNSET  
JUNE 1 2021..........SUNRISE 5:46 AM EDT SUNSET 8:30 PM EDT  
JUNE 2 2021..........SUNRISE 5:46 AM EDT SUNSET 8:30 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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