Records for American Falls Area, Idaho (AFLI1thr) on 09-30
  Record Highs
  
    - 
      1:  89°F (2011)
    
 
    - 
      2:  88°F (1895)
    
 
    - 
      3:  87°F (2010)
    
 
  
 
  Record Lows
  
    - 
      1:  23°F (1985)
    
 
    - 
      2:  23°F (1954)
    
 
    - 
      3:  24°F (1911)
    
 
  
 
  Lowest Highs
  
    - 
      1:  61°F (1951)
    
 
    - 
      2:  55°F (2013)
    
 
    - 
      3:  55°F (1938)
    
 
  
 
  Highest Lows
  
    - 
      1:  46°F (1971)
    
 
    - 
      2:  47°F (1986)
    
 
    - 
      3:  49°F (2019)
    
 
  
 
  Highest September temperature:
  
  100°F on 09-12-1899.
  Lowest September temperature:
  
  16°F on 09-18-1911.
  Average temperature is 55.7°F
  Average high is 69.7°F
  Average low is 41.8°F
 
  Temperature data from 1892 to 2022.
  Record Precipitation
  
    - 
      1:  0.42" (2009)
    
 
    - 
      2:  0.42" (1983)
    
 
    - 
      3:  0.41" (2004)
    
 
  
 
  Precipitation data from 1892 to 2022.