421  
CDUS43 KLOT 170702  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
102 AM CST SUN JAN 17 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR JANUARY 16 2021...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1997 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 36 3:18 PM 46 2006 31 5 28  
MINIMUM 29 2:24 AM -22 2009 15 14 11  
AVERAGE 33 23 10 20  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 0.75 0.04 0.01 T  
MONTH TO DATE 0.48 0.67 -0.19 1.23  
SINCE DEC 1 2.33 2.39 -0.06 2.61  
SINCE JAN 1 0.48 0.67 -0.19 1.23  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 42 -10 45  
MONTH TO DATE 571 670 -99 541  
SINCE DEC 1 1644 1843 -199 1549  
SINCE JUL 1 2815 3097 -282 2925  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 9.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 31 42 2006  
2015  
MINIMUM TEMPERATURE (F) 15 -4 2018  
 
SUNRISE AND SUNSET  
JANUARY 17 2021.......SUNRISE 7:17 AM CST SUNSET 4:50 PM CST  
JANUARY 18 2021.......SUNRISE 7:17 AM CST SUNSET 4:51 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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