Records for San Antonio Area, Texas (SATthr) on 12-20
  Record Highs
  
    - 
      1:  85°F (1951)
    
 
    - 
      2:  81°F (1916)
    
 
    - 
      3:  80°F (1971)
    
 
  
 
  Record Lows
  
    - 
      1:  21°F (1924)
    
 
    - 
      2:  22°F (1973)
    
 
    - 
      3:  23°F (1996)
    
 
  
 
  Lowest Highs
  
    - 
      1:  66°F (1991)
    
 
    - 
      2:  66°F (1984)
    
 
    - 
      3:  65°F (2013)
    
 
  
 
  Highest Lows
  
    - 
      1:  29°F (1924)
    
 
    - 
      2:  34°F (1929)
    
 
    - 
      3:  36°F (1983)
    
 
  
 
  Highest December temperature:
  
  90°F on 12-25-1955.
  Lowest December temperature:
  
  6°F on 12-23-1989.
  Average temperature is 52°F
  Average high is 63.4°F
  Average low is 40.5°F
 
  Temperature data from 1885 to 2022.
  Record Precipitation
  
    - 
      1:  2.52" (1997)
    
 
    - 
      2:  1.08" (1991)
    
 
    - 
      3:  0.54" (1899)
    
 
  
 
  Precipitation data from 1885 to 2022.