Records for Rapid City Downtown Area, South Dakota (UNRS2thr) on 12-21
  Record Highs
  
    - 
      1:  65°F (1933)
    
- 
      2:  61°F (1896)
    
- 
      3:  61°F (1893)
    
 
  Record Lows
  
    - 
      1:  -18°F (2022)
    
- 
      2:  -17°F (1924)
    
- 
      3:  -13°F (1998)
    
 
  Lowest Highs
  
    - 
      1:  48°F (1933)
    
- 
      2:  44°F (1900)
    
- 
      3:  40°F (2019)
    
 
  Highest Lows
  
    - 
      1:  -5°F (2022)
    
- 
      2:  -5°F (1924)
    
- 
      3:  5°F (1892)
    
 
  Highest December temperature:
  
  79°F on 12-05-1939.
  Lowest December temperature:
  
  -28°F on 12-20-1916.
  Average temperature is 27.1°F
  Average high is 36.5°F
  Average low is 17.6°F
 
  Temperature data from 1888 to 2022.
  Record Precipitation
  
    - 
      1:  0.19" (1996)
    
- 
      2:  0.19" (1918)
    
- 
      3:  0.14" (1911)
    
 
  Precipitation data from 1888 to 2022.