Records for Milwaukee Area, Wisconsin (MKEthr) on 09-21
  Record Highs
  
    - 
      1:  90°F (1920)
    
 
    - 
      2:  90°F (1893)
    
 
    - 
      3:  89°F (1895)
    
 
  
 
  Record Lows
  
    - 
      1:  33°F (1962)
    
 
    - 
      2:  35°F (1875)
    
 
    - 
      3:  38°F (1956)
    
 
  
 
  Lowest Highs
  
    - 
      1:  71°F (1895)
    
 
    - 
      2:  70°F (2017)
    
 
    - 
      3:  69°F (2019)
    
 
  
 
  Highest Lows
  
    - 
      1:  46°F (1913)
    
 
    - 
      2:  49°F (1995)
    
 
    - 
      3:  50°F (1875)
    
 
  
 
  Highest September temperature:
  
  99°F on 09-15-1939.
  Lowest September temperature:
  
  28°F on 09-23-1974.
  Average temperature is 63.3°F
  Average high is 74.5°F
  Average low is 52°F
 
  Temperature data from 1871 to 2022.
  Record Precipitation
  
    - 
      1:  2.71" (1947)
    
 
    - 
      2:  1.30" (1909)
    
 
    - 
      3:  1.16" (1950)
    
 
  
 
  Precipitation data from 1871 to 2022.