Records for Boston Area, Massachusetts (BOSthr) on 05-15
  Record Highs
  
    - 
      1:  93°F (1900)
    
- 
      2:  89°F (2004)
    
- 
      3:  89°F (1951)
    
 
  Record Lows
  
    - 
      1:  36°F (1947)
    
- 
      2:  38°F (1882)
    
- 
      3:  39°F (1880)
    
 
  Lowest Highs
  
    - 
      1:  63°F (2022)
    
- 
      2:  62°F (1961)
    
- 
      3:  61°F (2021)
    
 
  Highest Lows
  
    - 
      1:  46°F (1882)
    
- 
      2:  48°F (1888)
    
- 
      3:  49°F (1925)
    
 
  Highest May temperature:
  
  97°F on 05-26-1880.
  Lowest May temperature:
  
  31°F on 05-03-1882.
  Average temperature is 58.1°F
  Average high is 66.2°F
  Average low is 50°F
 
  Temperature data from 1872 to 2022.
  Record Precipitation
  
    - 
      1:  1.73" (1978)
    
- 
      2:  1.57" (1938)
    
- 
      3:  1.27" (1954)
    
 
  Precipitation data from 1872 to 2022.