Records for San Diego Area, California (SANthr) on 10-21
  Record Highs
  
    - 
      1:  101°F (1965)
    
- 
      2:  96°F (1901)
    
- 
      3:  94°F (1904)
    
 
  Record Lows
  
    - 
      1:  45°F (1949)
    
- 
      2:  45°F (1920)
    
- 
      3:  47°F (1892)
    
 
  Lowest Highs
  
    - 
      1:  68°F (2020)
    
- 
      2:  68°F (1978)
    
- 
      3:  68°F (1976)
    
 
  Highest Lows
  
    - 
      1:  63°F (1924)
    
- 
      2:  63°F (1916)
    
- 
      3:  64°F (1899)
    
 
  Highest October temperature:
  
  107°F on 10-14-1961.
  Lowest October temperature:
  
  43°F on 10-30-1971.
  Average temperature is 67.4°F
  Average high is 74.3°F
  Average low is 60.6°F
 
  Temperature data from 1874 to 2022.
  Record Precipitation
  
    - 
      1:  0.32" (1976)
    
- 
      2:  0.23" (1941)
    
- 
      3:  0.22" (1895)
    
 
  Precipitation data from 1850 to 2022.