Records for Rapid City Area, South Dakota (RAPthr) on 05-12
  Record Highs
  
    - 
      1:  90°F (1960)
    
- 
      2:  85°F (1958)
    
- 
      3:  83°F (1994)
    
 
  Record Lows
  
    - 
      1:  22°F (1953)
    
- 
      2:  22°F (1943)
    
- 
      3:  28°F (1983)
    
 
  Lowest Highs
  
    - 
      1:  58°F (1958)
    
- 
      2:  54°F (1944)
    
- 
      3:  53°F (1962)
    
 
  Highest Lows
  
    - 
      1:  36°F (1953)
    
- 
      2:  39°F (2010)
    
- 
      3:  39°F (2005)
    
 
  Highest May temperature:
  
  98°F on 05-27-1969.
  Lowest May temperature:
  
  18°F on 05-01-1950.
  Average temperature is 53.5°F
  Average high is 63.9°F
  Average low is 43.2°F
 
  Temperature data from 1942 to 2022.
  Record Precipitation
  
    - 
      1:  0.54" (2010)
    
- 
      2:  0.49" (1947)
    
- 
      3:  0.44" (1956)
    
 
  Precipitation data from 1942 to 2022.