853  
CDUS41 KLWX 192121  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
521 PM EDT TUE OCT 19 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 19 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 74 3:02 PM 87 2016 67 7 72  
MINIMUM 39 6:39 AM 25 1976 44 -5 49  
AVERAGE 57 55 2 61  
 
PRECIPITATION (IN)  
TODAY 0.00 1.36 1966 0.12 -0.12 T  
MONTH TO DATE 0.49 2.28 -1.79 1.33  
SINCE SEP 1 5.21 6.22 -1.01 3.61  
SINCE JAN 1 29.80 35.44 -5.64 37.83  
 
SNOWFALL (IN)  
TODAY 0.0 0.1 1972 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 8 10 -2 4  
MONTH TO DATE 32 137 -105 126  
SINCE SEP 1 49 182 -133 187  
SINCE JUL 1 49 183 -134 187  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 52 19 33 4  
SINCE SEP 1 223 171 52 139  
SINCE JAN 1 1475 1227 248 1391    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 5.2  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 3:00 AM  
LOWEST 33 4:00 PM  
AVERAGE 61  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 83 1969  
2016  
MINIMUM TEMPERATURE (F) 44 20 1972  
 
SUNRISE AND SUNSET  
OCTOBER 19 2021.......SUNRISE 7:24 AM EDT SUNSET 6:25 PM EDT  
OCTOBER 20 2021.......SUNRISE 7:25 AM EDT SUNSET 6:24 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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