424  
CDUS43 KLOT 200632  
CLIDPA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
132 AM CDT MON SEP 20 2021  
   
...............................
 
 
...THE DU PAGE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 19 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
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 90R 2:47 PM 89 2013 75 15 65  
MINIMUM 59 6:01 AM 37 2020 52 7 37  
AVERAGE 75 64 11 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.60 0.10 -0.10 0.00  
MONTH TO DATE 0.33 1.89 -1.56 3.48  
SINCE SEP 1 0.33 1.89 -1.56 3.48  
SINCE JAN 1 16.74 25.26 -8.52 24.53  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 4 -4 14  
MONTH TO DATE 0 39 -39 55  
SINCE SEP 1 0 39 -39 55  
SINCE JUL 1 0 50 -50 59  
 
COOLING  
YESTERDAY 10 2 8 0  
MONTH TO DATE 102 70 32 41  
SINCE SEP 1 102 70 32 41  
SINCE JAN 1 1013 794 219 934    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SE (140)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 5.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
   
......................................................
 
 
THE DU PAGE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 93 2018  
MINIMUM TEMPERATURE (F) 52 40 2003  
2020  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2021.....SUNRISE 6:39 AM CDT SUNSET 6:53 PM CDT  
SEPTEMBER 21 2021.....SUNRISE 6:40 AM CDT SUNSET 6:51 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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