872  
CDUS41 KLWX 290524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT TUE AUG 29 2023  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 28 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 81 2:00 PM 98 1993 85 -4 91  
MINIMUM 73 6:11 AM 44 1986 64 9 68  
AVERAGE 77 74 3 80  
 
PRECIPITATION (IN)  
YESTERDAY T 1.73 2002 0.11 -0.11 0.04  
MONTH TO DATE 1.84 3.20 -1.36 2.14  
SINCE JUN 1 9.23 11.65 -2.42 10.12  
SINCE JAN 1 19.21 28.89 -9.68 27.34  
 
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 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 5 13 -8 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 12 9 3 15  
MONTH TO DATE 349 308 41 355  
SINCE JUN 1 1004 924 80 1008  
SINCE JAN 1 1078 1030 48 1137    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 3:00 AM  
LOWEST 60 11:00 AM  
AVERAGE 74  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 98 1991  
MINIMUM TEMPERATURE (F) 63 38 1982  
 
SUNRISE AND SUNSET  
AUGUST 29 2023........SUNRISE 6:36 AM EDT SUNSET 7:45 PM EDT  
AUGUST 30 2023........SUNRISE 6:37 AM EDT SUNSET 7:44 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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