Records for El Cajon Area, California (ELJC1thr) on 09-18
  Record Highs
  
    - 
      1:  104°F (2020)
    
- 
      2:  104°F (1939)
    
- 
      3:  103°F (1934)
    
 
  Record Lows
  
    - 
      1:  37°F (1900)
    
- 
      2:  42°F (1933)
    
- 
      3:  44°F (1954)
    
 
  Lowest Highs
  
    - 
      1:  72°F (1984)
    
- 
      2:  71°F (2014)
    
- 
      3:  69°F (1971)
    
 
  Highest Lows
  
    - 
      1:  69°F (1985)
    
- 
      2:  69°F (1965)
    
- 
      3:  71°F (1932)
    
 
  Highest September temperature:
  
  114°F on 09-05-2020.
  Lowest September temperature:
  
  37°F on 09-18-1900.
  Average temperature is 74.5°F
  Average high is 87.1°F
  Average low is 61.9°F
 
  Temperature data from 1899 to 2022.
  Record Precipitation
  
    - 
      1:  0.83" (1963)
    
- 
      2:  0.19" (1985)
    
- 
      3:  0.19" (1939)
    
 
  Precipitation data from 1899 to 2022.