273  
CDUS41 KLWX 102123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT THU JUN 10 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 10 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 87 MM 99 1964 82 5 90  
MINIMUM 69 MM 43 1988 60 9 74  
AVERAGE 78 71 7 82  
 
PRECIPITATION (IN)  
TODAY T 1.16 2009 0.15 -0.15 1.07  
MONTH TO DATE 0.03 1.48 -1.45 2.94  
SINCE JUN 1 0.03 1.48 -1.45 2.94  
SINCE JAN 1 13.61 18.72 -5.11 19.46  
 
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 0 11 -11 5  
SINCE JUN 1 0 11 -11 5  
SINCE JUL 1 4152 4603 -451 4154  
 
COOLING  
TODAY 13 6 7 17  
MONTH TO DATE 118 56 62 91  
SINCE JUN 1 118 56 62 91  
SINCE JAN 1 227 162 65 168    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 2.3  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 3:00 AM  
LOWEST 53 1:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 95 2016  
MINIMUM TEMPERATURE (F) 61 40 1972  
 
SUNRISE AND SUNSET  
JUNE 10 2021..........SUNRISE 5:44 AM EDT SUNSET 8:35 PM EDT  
JUNE 11 2021..........SUNRISE 5:44 AM EDT SUNSET 8:35 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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