106  
CDUS41 KLWX 032130  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
530 PM EDT SUN OCT 03 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 3 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 85 1:24 PM 86 2002 73 12 67  
2007  
2018  
MINIMUM 55 6:08 AM 30 1974 51 4 40  
2003  
AVERAGE 70 62 8 54  
 
PRECIPITATION (IN)  
TODAY 0.00 0.86 1987 0.12 -0.12 0.00  
MONTH TO DATE 0.00 0.38 -0.38 0.09  
SINCE SEP 1 4.72 4.32 0.40 2.37  
SINCE JAN 1 29.31 33.54 -4.23 36.59  
 
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 SEP 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  
TODAY 0 5 -5 11  
MONTH TO DATE 5 14 -9 23  
SINCE SEP 1 22 59 -37 84  
SINCE JUL 1 22 60 -38 84  
 
COOLING  
TODAY 5 2 3 0  
MONTH TO DATE 5 6 -1 0  
SINCE SEP 1 176 158 18 135  
SINCE JAN 1 1428 1214 214 1387    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 2.4  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 6:00 AM  
LOWEST 49 3:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 90 2013  
MINIMUM TEMPERATURE (F) 50 26 1974  
 
SUNRISE AND SUNSET  
OCTOBER 3 2021.......SUNRISE 7:08 AM EDT SUNSET 6:49 PM EDT  
OCTOBER 4 2021.......SUNRISE 7:09 AM EDT SUNSET 6:47 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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