Records for Boise Area, Idaho (BOIthr) on 09-28
  Record Highs
  
    - 
      1:  95°F (1963)
    
 
    - 
      2:  93°F (2016)
    
 
    - 
      3:  91°F (2022)
    
 
  
 
  Record Lows
  
    - 
      1:  30°F (1881)
    
 
    - 
      2:  31°F (1999)
    
 
    - 
      3:  32°F (1984)
    
 
  
 
  Lowest Highs
  
    - 
      1:  60°F (1938)
    
 
    - 
      2:  58°F (2022)
    
 
    - 
      3:  58°F (2004)
    
 
  
 
  Highest Lows
  
    - 
      1:  52°F (1925)
    
 
    - 
      2:  52°F (1905)
    
 
    - 
      3:  54°F (1940)
    
 
  
 
  Highest September temperature:
  
  104°F on 09-07-2022.
  Lowest September temperature:
  
  23°F on 09-14-1970.
  Average temperature is 61.6°F
  Average high is 74.6°F
  Average low is 48.6°F
 
  Temperature data from 1875 to 2022.
  Record Precipitation
  
    - 
      1:  0.34" (2014)
    
 
    - 
      2:  0.26" (1925)
    
 
    - 
      3:  0.25" (1962)
    
 
  
 
  Precipitation data from 1878 to 2022.