458   
CDUS43 KLOT 312132  
CLIDPA  
  
CLIMATE REPORT   
NATIONAL WEATHER SERVICE CHICAGO IL  
432 PM CDT FRI OCT 31 2025  
   
...............................  
  
...THE DUPAGE AIRPORT CLIMATE SUMMARY FOR OCTOBER 31 2025...  
VALID TODAY AS OF 0400 PM LOCAL TIME.  
  
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1997 TO 2025  
  
WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST        
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR       
                                                  NORMAL              
...............................................................  
  
TEMPERATURE (F)                                                            
 TODAY                                                                 
  MAXIMUM         52   2:44 PM  71    2024  55     -3       71          
  MINIMUM         39   6:45 AM  22    2023  37      2       42          
  AVERAGE         46                        46      0       57       
  
PRECIPITATION (IN)                                                      
  TODAY            0.00          0.88 2013   0.08  -0.08     0.06       
  MONTH TO DATE    3.02                      2.99   0.03     1.02       
  SINCE SEP 1      3.66                      5.99  -2.33     2.44       
  SINCE JAN 1     24.19                     29.36  -5.17    26.76       
  
DEGREE DAYS                                                             
 HEATING                                                                
  TODAY           19                        19      0        8          
  MONTH TO DATE  291                       407   -116      265          
  SINCE SEP 1    338                       507   -169      298          
  SINCE JUL 1    349                       518   -169      307          
  
 COOLING                                                                
  TODAY            0                         0      0        0          
  MONTH TO DATE   49                        11     38       19          
  SINCE SEP 1    176                        99     77      129          
  SINCE JAN 1   1084                       823    261      927           
...............................................................  
  
WIND (MPH)                                                              
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     W (280)         
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     W (290)         
  AVERAGE WIND SPEED     9.1                                          
  
WEATHER CONDITIONS                                                      
THE FOLLOWING WEATHER WAS RECORDED TODAY.                               
  NO SIGNIFICANT WEATHER WAS OBSERVED.                                    
  
RELATIVE HUMIDITY (PERCENT)  
 HIGHEST    86           6:00 AM                                        
 LOWEST     58           2:00 PM                                        
 AVERAGE    72                                                          
   
......................................................  
  
THE DUPAGE AIRPORT CLIMATE NORMALS FOR TOMORROW  
                         NORMAL    RECORD    YEAR                       
 MAXIMUM TEMPERATURE (F)   55        76      2016                        
 MINIMUM TEMPERATURE (F)   36        20      2019                        
  
SUNRISE AND SUNSET                                                      
OCTOBER 31 2025.......SUNRISE   7:25 AM CDT   SUNSET   5:48 PM CDT       
NOVEMBER  1 2025......SUNRISE   7:26 AM CDT   SUNSET   5:47 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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