468  
CDUS41 KLWX 162122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT SAT OCT 16 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 16 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 78 11:01 AM 85 1989 68 10 68  
MINIMUM 63 3:22 PM 30 1986 45 18 45  
AVERAGE 71 56 15 57  
 
PRECIPITATION (IN)  
TODAY 0.46 1.10 2002 0.12 0.34 0.01  
MONTH TO DATE 0.49 1.93 -1.44 1.33  
SINCE SEP 1 5.21 5.87 -0.66 3.61  
SINCE JAN 1 29.80 35.09 -5.29 37.83  
 
SNOWFALL (IN)  
TODAY 0.0 T 1977 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 9 -9 8  
MONTH TO DATE 5 108 -103 92  
SINCE SEP 1 22 153 -131 153  
SINCE JUL 1 22 154 -132 153  
 
COOLING  
TODAY 6 0 6 0  
MONTH TO DATE 58 19 39 4  
SINCE SEP 1 229 171 58 139  
SINCE JAN 1 1481 1227 254 1391    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 10.1  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 3:00 PM  
LOWEST 61 1:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 84 2016  
MINIMUM TEMPERATURE (F) 45 31 1981  
1982  
 
SUNRISE AND SUNSET  
OCTOBER 16 2021.......SUNRISE 7:21 AM EDT SUNSET 6:29 PM EDT  
OCTOBER 17 2021.......SUNRISE 7:22 AM EDT SUNSET 6:28 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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