Records for San Diego Area, California (SANthr) on 07-21
  Record Highs
  
    - 
      1:  86°F (1877)
    
- 
      2:  85°F (1981)
    
- 
      3:  84°F (2016)
    
 
  Record Lows
  
    - 
      1:  57°F (1894)
    
- 
      2:  58°F (1943)
    
- 
      3:  58°F (1940)
    
 
  Lowest Highs
  
    - 
      1:  73°F (2006)
    
- 
      2:  73°F (1984)
    
- 
      3:  73°F (1981)
    
 
  Highest Lows
  
    - 
      1:  66°F (1911)
    
- 
      2:  67°F (2010)
    
- 
      3:  68°F (1905)
    
 
  Highest July temperature:
  
  100°F on 07-30-1930.
  Lowest July temperature:
  
  54°F on 07-04-1880.
  Average temperature is 71.2°F
  Average high is 75.7°F
  Average low is 66.7°F
 
  Temperature data from 1874 to 2022.
  Record Precipitation
  
    - 
      1:  0.15" (1860)
    
- 
      2:  0.02" (1911)
    
- 
      3:  0.01" (2015)
    
 
  Precipitation data from 1850 to 2022.