Records for Billings Area, Montana (BILthr) on 09-30
  Record Highs
  
    - 
      1:  90°F (1963)
    
- 
      2:  89°F (1992)
    
- 
      3:  88°F (2011)
    
 
  Record Lows
  
    - 
      1:  23°F (1985)
    
- 
      2:  26°F (1950)
    
- 
      3:  29°F (1958)
    
 
  Lowest Highs
  
    - 
      1:  61°F (2016)
    
- 
      2:  59°F (2005)
    
- 
      3:  56°F (1989)
    
 
  Highest Lows
  
    - 
      1:  35°F (1950)
    
- 
      2:  37°F (2018)
    
- 
      3:  40°F (1944)
    
 
  Highest September temperature:
  
  103°F on 09-01-1983.
  Lowest September temperature:
  
  22°F on 09-24-1984.
  Average temperature is 54.5°F
  Average high is 68.5°F
  Average low is 40.5°F
 
  Temperature data from 1934 to 2022.
  Record Precipitation
  
    - 
      1:  0.54" (2022)
    
- 
      2:  0.36" (2009)
    
- 
      3:  0.35" (1971)
    
 
  Precipitation data from 1934 to 2022.