Records for San Diego Area, California (SANthr) on 09-30
  Record Highs
  
    - 
      1:  96°F (2020)
    
- 
      2:  91°F (1906)
    
- 
      3:  90°F (1945)
    
 
  Record Lows
  
    - 
      1:  51°F (1880)
    
- 
      2:  54°F (1907)
    
- 
      3:  55°F (1951)
    
 
  Lowest Highs
  
    - 
      1:  71°F (2016)
    
- 
      2:  71°F (1997)
    
- 
      3:  70°F (1984)
    
 
  Highest Lows
  
    - 
      1:  64°F (1899)
    
- 
      2:  66°F (1935)
    
- 
      3:  67°F (1933)
    
 
  Highest September temperature:
  
  111°F on 09-26-1963.
  Lowest September temperature:
  
  50°F on 09-18-1882.
  Average temperature is 70.1°F
  Average high is 75.8°F
  Average low is 64.4°F
 
  Temperature data from 1874 to 2022.
  Record Precipitation
  
    - 
      1:  1.23" (1921)
    
- 
      2:  0.25" (1916)
    
- 
      3:  0.17" (1910)
    
 
  Precipitation data from 1850 to 2022.