330  
CDUS41 KLWX 070522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
122 AM EDT MON JUN 07 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 6 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 93R 3:29 PM 92 2005 80 13 90  
MINIMUM 69 5:09 AM 39 1976 59 10 66  
AVERAGE 81 70 11 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.83 1983 0.15 -0.15 0.00  
MONTH TO DATE 0.03 0.89 -0.86 1.87  
SINCE JUN 1 0.03 0.89 -0.86 1.87  
SINCE JAN 1 13.61 18.13 -4.52 18.39  
 
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 1 -1 0  
MONTH TO DATE 0 8 -8 5  
SINCE JUN 1 0 8 -8 5  
SINCE JUL 1 4152 4600 -448 4154  
 
COOLING  
YESTERDAY 16 6 10 13  
MONTH TO DATE 57 32 25 55  
SINCE JUN 1 57 32 25 55  
SINCE JAN 1 166 138 28 132    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 5.2  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 4:00 AM  
LOWEST 41 2:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 96 1999  
MINIMUM TEMPERATURE (F) 60 45 1977  
 
SUNRISE AND SUNSET  
JUNE 7 2021..........SUNRISE 5:44 AM EDT SUNSET 8:33 PM EDT  
JUNE 8 2021..........SUNRISE 5:44 AM EDT SUNSET 8:34 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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