Records for San Antonio Area, Texas (SATthr) on 03-21
  Record Highs
  
    - 
      1:  94°F (1904)
    
- 
      2:  93°F (1916)
    
- 
      3:  92°F (1952)
    
 
  Record Lows
  
    - 
      1:  28°F (1965)
    
- 
      2:  31°F (1996)
    
- 
      3:  35°F (2010)
    
 
  Lowest Highs
  
    - 
      1:  70°F (1904)
    
- 
      2:  69°F (1952)
    
- 
      3:  69°F (1948)
    
 
  Highest Lows
  
    - 
      1:  53°F (1908)
    
- 
      2:  54°F (2020)
    
- 
      3:  54°F (1968)
    
 
  Highest March temperature:
  
  100°F on 03-06-1991.
  Lowest March temperature:
  
  19°F on 03-02-1980.
  Average temperature is 63.7°F
  Average high is 75°F
  Average low is 52.4°F
 
  Temperature data from 1885 to 2022.
  Record Precipitation
  
    - 
      1:  0.99" (1929)
    
- 
      2:  0.81" (1921)
    
- 
      3:  0.78" (2015)
    
 
  Precipitation data from 1885 to 2022.