Records for Great Falls Area, Montana (GTFthr) on 10-20
  Record Highs
  
    - 
      1:  81°F (1974)
    
- 
      2:  78°F (2014)
    
- 
      3:  78°F (1921)
    
 
  Record Lows
  
    - 
      1:  16°F (1984)
    
- 
      2:  17°F (1951)
    
- 
      3:  17°F (1930)
    
 
  Lowest Highs
  
    - 
      1:  53°F (2014)
    
- 
      2:  53°F (1974)
    
- 
      3:  53°F (1940)
    
 
  Highest Lows
  
    - 
      1:  26°F (1949)
    
- 
      2:  28°F (1930)
    
- 
      3:  29°F (1951)
    
 
  Highest October temperature:
  
  91°F on 10-01-1992.
  Lowest October temperature:
  
  -11°F on 10-30-1991.
  Average temperature is 46.1°F
  Average high is 57.5°F
  Average low is 34.7°F
 
  Temperature data from 1891 to 2022.
  Record Precipitation
  
    - 
      1:  0.53" (1908)
    
- 
      2:  0.27" (2004)
    
- 
      3:  0.25" (1996)
    
 
  Precipitation data from 1891 to 2022.