Records for Mount Shasta Area, California (MHSthr) on 09-18
  Record Highs
  
    - 
      1:  93°F (1951)
    
- 
      2:  92°F (1952)
    
- 
      3:  91°F (1974)
    
 
  Record Lows
  
    - 
      1:  29°F (1965)
    
- 
      2:  32°F (1954)
    
- 
      3:  33°F (1996)
    
 
  Lowest Highs
  
    - 
      1:  55°F (1951)
    
- 
      2:  54°F (2010)
    
- 
      3:  53°F (2018)
    
 
  Highest Lows
  
    - 
      1:  54°F (1978)
    
- 
      2:  55°F (1982)
    
- 
      3:  55°F (1977)
    
 
  Highest September temperature:
  
  103°F on 09-02-1955.
  Lowest September temperature:
  
  25°F on 09-17-1965.
  Average temperature is 60.7°F
  Average high is 77.5°F
  Average low is 43.8°F
 
  Temperature data from 1948 to 2022.
  Record Precipitation
  
    - 
      1:  1.23" (1959)
    
- 
      2:  1.18" (1948)
    
- 
      3:  0.89" (2010)
    
 
  Precipitation data from 1948 to 2022.