Records for Williston Area, North Dakota (ISNthr) on 08-21
  Record Highs
  
    - 
      1:  99°F (1971)
    
- 
      2:  99°F (1969)
    
- 
      3:  97°F (2001)
    
 
  Record Lows
  
    - 
      1:  34°F (1907)
    
- 
      2:  39°F (2018)
    
- 
      3:  40°F (2000)
    
 
  Lowest Highs
  
    - 
      1:  70°F (1947)
    
- 
      2:  69°F (1931)
    
- 
      3:  67°F (1961)
    
 
  Highest Lows
  
    - 
      1:  52°F (1966)
    
- 
      2:  60°F (1964)
    
- 
      3:  63°F (1974)
    
 
  Highest August temperature:
  
  108°F on 08-07-1949.
  Lowest August temperature:
  
  32°F on 08-22-1911.
  Average temperature is 67.9°F
  Average high is 83°F
  Average low is 52.9°F
 
  Temperature data from 1894 to 2022.
  Record Precipitation
  
    - 
      1:  3.04" (1993)
    
- 
      2:  1.30" (1966)
    
- 
      3:  1.13" (1918)
    
 
  Precipitation data from 1894 to 2022.