Records for Chicago Area, Illinois (ORDthr) on 10-31
  Record Highs
  
    - 
      1:  84°F (1950)
    
- 
      2:  79°F (1944)
    
- 
      3:  78°F (1935)
    
 
  Record Lows
  
    - 
      1:  23°F (1873)
    
- 
      2:  24°F (1917)
    
- 
      3:  25°F (2019)
    
 
  Lowest Highs
  
    - 
      1:  65°F (1974)
    
- 
      2:  61°F (1900)
    
- 
      3:  59°F (1933)
    
 
  Highest Lows
  
    - 
      1:  31°F (1873)
    
- 
      2:  32°F (1917)
    
- 
      3:  33°F (2019)
    
 
  Highest October temperature:
  
  94°F on 10-06-1963.
  Lowest October temperature:
  
  14°F on 10-25-1887.
  Average temperature is 48.7°F
  Average high is 55°F
  Average low is 42.3°F
 
  Temperature data from 1872 to 2022.
  Record Precipitation
  
    - 
      1:  2.26" (1994)
    
- 
      2:  1.41" (1871)
    
- 
      3:  1.27" (1941)
    
 
  Precipitation data from 1871 to 2022.