Records for Tri-Cities Area, Washington (PSCthr) on 09-12
  Record Highs
  
    - 
      1:  97°F (2011)
    
 
    - 
      2:  97°F (1943)
    
 
    - 
      3:  95°F (2015)
    
 
  
 
  Record Lows
  
    - 
      1:  29°F (1921)
    
 
    - 
      2:  33°F (2012)
    
 
    - 
      3:  35°F (1907)
    
 
  
 
  Lowest Highs
  
    - 
      1:  65°F (1937)
    
 
    - 
      2:  61°F (1969)
    
 
    - 
      3:  61°F (1963)
    
 
  
 
  Highest Lows
  
    - 
      1:  60°F (1906)
    
 
    - 
      2:  63°F (1985)
    
 
    - 
      3:  63°F (1921)
    
 
  
 
  Highest September temperature:
  
  102°F on 09-01-2022.
  Lowest September temperature:
  
  21°F on 09-24-1926.
  Average temperature is 65.6°F
  Average high is 82.5°F
  Average low is 48.6°F
 
  Temperature data from 1894 to 2022.
  Record Precipitation
  
    - 
      1:  0.42" (1895)
    
 
    - 
      2:  0.37" (1928)
    
 
    - 
      3:  0.35" (1896)
    
 
  
 
  Precipitation data from 1894 to 2022.