271  
CDUS41 KLWX 040526  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
126 AM EDT FRI JUN 04 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 3 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 84 3:24 PM 95 2020 80 4 95  
MINIMUM 66 4:06 AM 39 1986 58 8 64  
AVERAGE 75 69 6 80  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 4.34 1991 0.14 -0.11 T  
MONTH TO DATE 0.03 0.44 -0.41 T  
SINCE JUN 1 0.03 0.44 -0.41 T  
SINCE JAN 1 13.61 17.68 -4.07 16.52  
 
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 5 -5 5  
SINCE JUN 1 0 5 -5 5  
SINCE JUL 1 4152 4597 -445 4154  
 
COOLING  
YESTERDAY 10 5 5 15  
MONTH TO DATE 18 15 3 16  
SINCE JUN 1 18 15 3 16  
SINCE JAN 1 127 121 6 93    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 8.4  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 5:00 AM  
LOWEST 57 3:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 91 2020  
MINIMUM TEMPERATURE (F) 59 40 1976  
1977  
 
SUNRISE AND SUNSET  
JUNE 4 2021..........SUNRISE 5:45 AM EDT SUNSET 8:32 PM EDT  
JUNE 5 2021..........SUNRISE 5:45 AM EDT SUNSET 8:32 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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