Records for Boise Area, Idaho (BOIthr) on 09-11
  Record Highs
  
    - 
      1:  97°F (1963)
    
 
    - 
      2:  96°F (1953)
    
 
    - 
      3:  96°F (1888)
    
 
  
 
  Record Lows
  
    - 
      1:  27°F (1889)
    
 
    - 
      2:  35°F (1982)
    
 
    - 
      3:  36°F (1910)
    
 
  
 
  Lowest Highs
  
    - 
      1:  68°F (1996)
    
 
    - 
      2:  68°F (1959)
    
 
    - 
      3:  67°F (1940)
    
 
  
 
  Highest Lows
  
    - 
      1:  54°F (1909)
    
 
    - 
      2:  55°F (1972)
    
 
    - 
      3:  57°F (1985)
    
 
  
 
  Highest September temperature:
  
  104°F on 09-07-2022.
  Lowest September temperature:
  
  23°F on 09-14-1970.
  Average temperature is 68°F
  Average high is 82°F
  Average low is 54.1°F
 
  Temperature data from 1875 to 2022.
  Record Precipitation
  
    - 
      1:  1.73" (1976)
    
 
    - 
      2:  0.40" (1997)
    
 
    - 
      3:  0.38" (1980)
    
 
  
 
  Precipitation data from 1878 to 2022.