Records for Ukiah Area, California (UKIthr) on 05-15
  Record Highs
  
    - 
      1:  102°F (1927)
    
- 
      2:  99°F (2008)
    
- 
      3:  99°F (1970)
    
 
  Record Lows
  
    - 
      1:  32°F (1899)
    
- 
      2:  35°F (1917)
    
- 
      3:  35°F (1908)
    
 
  Lowest Highs
  
    - 
      1:  60°F (1987)
    
- 
      2:  58°F (2005)
    
- 
      3:  56°F (2008)
    
 
  Highest Lows
  
    - 
      1:  54°F (2011)
    
- 
      2:  56°F (1894)
    
- 
      3:  59°F (2019)
    
 
  Highest May temperature:
  
  106°F on 05-31-2021.
  Lowest May temperature:
  
  28°F on 05-31-1919.
  Average temperature is 61.7°F
  Average high is 76.3°F
  Average low is 47.2°F
 
  Temperature data from 1893 to 2022.
  Record Precipitation
  
    - 
      1:  1.18" (2019)
    
- 
      2:  0.63" (1898)
    
- 
      3:  0.48" (2000)
    
 
  Precipitation data from 1893 to 2022.