456  
CDUS41 KLWX 172124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
424 PM EST FRI NOV 17 2023  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 17 2023  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 73 2:56 PM 75 1963 56 17 43  
MINIMUM 40 12:21 AM 17 1976 35 5 29  
AVERAGE 57 46 11 36  
 
PRECIPITATION (IN)  
TODAY 0.00 1.03 1987 0.10 -0.10 0.00  
MONTH TO DATE 0.26 1.79 -1.53 2.35  
SINCE SEP 1 7.58 9.38 -1.80 7.87  
SINCE JAN 1 26.80 38.60 -11.80 35.37  
 
SNOWFALL (IN)  
TODAY 0.0 T 1965 0.1 -0.1 0.0  
1967  
1980  
MONTH TO DATE 0.0 0.1 -0.1 T  
SINCE SEP 1 T 0.1 -0.1 T  
SINCE JUL 1 T 0.1 -0.1 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 8 20 -12 29  
MONTH TO DATE 263 288 -25 194  
SINCE SEP 1 469 617 -148 535  
SINCE JUL 1 469 618 -149 535  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 22  
SINCE SEP 1 265 174 91 198  
SINCE JAN 1 1380 1230 150 1376    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 6:00 AM  
LOWEST 48 3:00 PM  
AVERAGE 72  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 76 1963  
MINIMUM TEMPERATURE (F) 35 18 2014  
 
SUNRISE AND SUNSET  
NOVEMBER 17 2023......SUNRISE 6:55 AM EST SUNSET 4:55 PM EST  
NOVEMBER 18 2023......SUNRISE 6:56 AM EST SUNSET 4:54 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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