Records for San Diego Area, California (SANthr) on 04-21
  Record Highs
  
    - 
      1:  88°F (1899)
    
- 
      2:  87°F (1987)
    
- 
      3:  84°F (1958)
    
 
  Record Lows
  
    - 
      1:  43°F (1896)
    
- 
      2:  44°F (1904)
    
- 
      3:  44°F (1882)
    
 
  Lowest Highs
  
    - 
      1:  63°F (2009)
    
- 
      2:  62°F (2020)
    
- 
      3:  62°F (2011)
    
 
  Highest Lows
  
    - 
      1:  58°F (1925)
    
- 
      2:  58°F (1878)
    
- 
      3:  59°F (2010)
    
 
  Highest April temperature:
  
  98°F on 04-06-1989.
  Lowest April temperature:
  
  39°F on 04-07-1875.
  Average temperature is 63.4°F
  Average high is 69.1°F
  Average low is 57.6°F
 
  Temperature data from 1874 to 2022.
  Record Precipitation
  
    - 
      1:  1.33" (1988)
    
- 
      2:  0.70" (1878)
    
- 
      3:  0.34" (1915)
    
 
  Precipitation data from 1850 to 2022.