Records for Sioux City Area, Iowa (SUXthr) on 07-21
  Record Highs
  
    - 
      1:  106°F (1934)
    
- 
      2:  106°F (1901)
    
- 
      3:  101°F (1974)
    
 
  Record Lows
  
    - 
      1:  48°F (2000)
    
- 
      2:  48°F (1947)
    
- 
      3:  52°F (1992)
    
 
  Lowest Highs
  
    - 
      1:  81°F (1934)
    
- 
      2:  78°F (2016)
    
- 
      3:  78°F (1901)
    
 
  Highest Lows
  
    - 
      1:  71°F (1992)
    
- 
      2:  71°F (1973)
    
- 
      3:  75°F (2000)
    
 
  Highest July temperature:
  
  111°F on 07-04-1936.
  Lowest July temperature:
  
  41°F on 07-09-1895.
  Average temperature is 75°F
  Average high is 85.9°F
  Average low is 64.2°F
 
  Temperature data from 1889 to 2022.
  Record Precipitation
  
    - 
      1:  3.24" (1928)
    
- 
      2:  1.52" (1977)
    
- 
      3:  1.19" (1950)
    
 
  Precipitation data from 1889 to 2022.