067  
CDUS41 KLWX 240526  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
126 AM EDT THU JUN 24 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 23 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 77 3:16 PM 96 1965 85 -8 89  
1988  
MINIMUM 49 5:10 AM 44 1992 64 -15 64  
AVERAGE 63 75 -12 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.59 2016 0.14 -0.14 T  
MONTH TO DATE 3.23 3.31 -0.08 4.94  
SINCE JUN 1 3.23 3.31 -0.08 4.94  
SINCE JAN 1 16.81 20.55 -3.74 21.46  
 
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 2 0 2 0  
MONTH TO DATE 5 11 -6 5  
SINCE JUN 1 5 11 -6 5  
SINCE JUL 1 4157 4603 -446 4154  
 
COOLING  
YESTERDAY 0 10 -10 12  
MONTH TO DATE 205 164 41 189  
SINCE JUN 1 205 164 41 189  
SINCE JAN 1 314 270 44 266    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 3.6  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 5:00 AM  
LOWEST 32 4:00 PM  
AVERAGE 59  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 86 97 2010  
MINIMUM TEMPERATURE (F) 64 46 1979  
 
SUNRISE AND SUNSET  
JUNE 24 2021..........SUNRISE 5:45 AM EDT SUNSET 8:39 PM EDT  
JUNE 25 2021..........SUNRISE 5:46 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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