Records for San Diego Area, California (SANthr) on 12-20
  Record Highs
  
    - 
      1:  82°F (1954)
    
- 
      2:  81°F (1960)
    
- 
      3:  78°F (1985)
    
 
  Record Lows
  
    - 
      1:  37°F (1878)
    
- 
      2:  38°F (1992)
    
- 
      3:  39°F (2021)
    
 
  Lowest Highs
  
    - 
      1:  59°F (1969)
    
- 
      2:  58°F (2010)
    
- 
      3:  58°F (1983)
    
 
  Highest Lows
  
    - 
      1:  55°F (1990)
    
- 
      2:  56°F (1970)
    
- 
      3:  56°F (1968)
    
 
  Highest December temperature:
  
  88°F on 12-29-1963.
  Lowest December temperature:
  
  32°F on 12-25-1879.
  Average temperature is 57.4°F
  Average high is 65.5°F
  Average low is 49.3°F
 
  Temperature data from 1874 to 2022.
  Record Precipitation
  
    - 
      1:  2.09" (1921)
    
- 
      2:  1.79" (1879)
    
- 
      3:  0.79" (1952)
    
 
  Precipitation data from 1850 to 2022.