602  
CDUS41 KLWX 052132  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
532 PM EDT TUE OCT 05 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 5 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 81 3:29 PM 90 1967 72 9 68  
2013  
MINIMUM 61 6:53 AM 32 1970 50 11 45  
AVERAGE 71 61 10 57  
 
PRECIPITATION (IN)  
TODAY 0.00 2.04 1971 0.12 -0.12 0.06  
MONTH TO DATE T 0.63 -0.63 0.15  
SINCE SEP 1 4.72 4.57 0.15 2.43  
SINCE JAN 1 29.31 33.79 -4.48 36.65  
 
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 6 -6 8  
MONTH TO DATE 5 25 -20 42  
SINCE SEP 1 22 70 -48 103  
SINCE JUL 1 22 71 -49 103  
 
COOLING  
TODAY 6 2 4 0  
MONTH TO DATE 22 10 12 0  
SINCE SEP 1 193 162 31 135  
SINCE JAN 1 1445 1218 227 1387    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 4.3  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 7:00 AM  
LOWEST 62 3:00 PM  
AVERAGE 80  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 89 2013  
MINIMUM TEMPERATURE (F) 49 28 1968  
 
SUNRISE AND SUNSET  
OCTOBER 5 2021.......SUNRISE 7:10 AM EDT SUNSET 6:46 PM EDT  
OCTOBER 6 2021.......SUNRISE 7:11 AM EDT SUNSET 6:44 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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