129  
CDUS41 KLWX 200522  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1222 AM EST MON NOV 20 2023  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 19 2023
 
 
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)  
YESTERDAY  
MAXIMUM 60 3:48 PM 76 1985 55 5 46  
MINIMUM 29 6:39 AM 13 2014 35 -6 26  
AVERAGE 45 45 0 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.93 2003 0.10 -0.10 0.00  
MONTH TO DATE 0.34 1.99 -1.65 2.35  
SINCE SEP 1 7.66 9.58 -1.92 7.87  
SINCE JAN 1 26.88 38.80 -11.92 35.37  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1969 0.0 0.0 0.0  
1984  
2016  
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  
YESTERDAY 20 20 0 29  
MONTH TO DATE 299 328 -29 251  
SINCE SEP 1 505 657 -152 592  
SINCE JUL 1 505 658 -153 592  
 
COOLING  
YESTERDAY 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 16 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 4.1  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 5:00 AM  
LOWEST 28 2:00 PM  
AVERAGE 55  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 79 1985  
MINIMUM TEMPERATURE (F) 34 18 1980  
 
SUNRISE AND SUNSET  
NOVEMBER 20 2023......SUNRISE 6:58 AM EST SUNSET 4:53 PM EST  
NOVEMBER 21 2023......SUNRISE 6:59 AM EST SUNSET 4:52 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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