444  
CDUS43 KLOT 212238  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
438 PM CST THU DEC 21 2023  
   
...............................  
 
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR DECEMBER 21 2023...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 48 2:22 PM 52 2015 34 14 31  
MINIMUM 31 1:50 AM -8 2000 20 11 9  
AVERAGE 40 27 13 20  
 
PRECIPITATION (IN)  
TODAY 0.00 0.74 2015 0.05 -0.05 0.00  
MONTH TO DATE 1.27 1.20 0.07 1.90  
SINCE DEC 1 1.27 1.20 0.07 1.90  
SINCE JAN 1 29.93 32.76 -2.83 31.74  
 
DEGREE DAYS  
HEATING  
TODAY 25 38 -13 45  
MONTH TO DATE 597 740 -143 703  
SINCE DEC 1 597 740 -143 703  
SINCE JUL 1 1763 2026 -263 1934  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 802 823 -21 955    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 5.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 2:00 AM  
LOWEST 51 12:00 PM  
AVERAGE 70  
   
......................................................  
 
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 33 53 2006  
MINIMUM TEMPERATURE (F) 20 -10 2000  
 
SUNRISE AND SUNSET  
DECEMBER 21 2023......SUNRISE 7:17 AM CST SUNSET 4:25 PM CST  
DECEMBER 22 2023......SUNRISE 7:18 AM CST SUNSET 4:25 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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