Baseball Almanac is pleased to present a record book full of baseball milestones for home runs in a month — including most in any month, most in any month by type of batter and most during each month of the season.
"(Rudy) York's batting average is well up with the best of the heavy hitters in the league. He manages to hit nice long ones in practically every game." - The Tribune News (June 11, 1931, 'Cedartown Nosed Out Atco 8 to 7; Game Saturday', Page 3)
Home Runs in a Month RecordsHome Run Records in Any Given Month During a Single Season |
||||||
| Record | LG | Name(s) | Team(s) | Data | ||
| Most Home Runs In Any Month During a Season |
AL | Rudy York | Detroit | 18 | August | 1937 |
| NL | Sammy Sosa | Chicago | 20 | June | 1998 | |
| Most Home Runs In Any Month During a Season By A Lefthander |
AL | Babe Ruth | New York | 17 | September | 1927 |
| NL | Barry Bonds | San Francisco | 17 | May | 2001 | |
| Most Home Runs In Any Month During a Season By A Righthander |
AL | Rudy York | Detroit | 18 | August | 1937 |
| NL | Sammy Sosa | Chicago | 20 | June | 1998 | |
| Most Home Runs In Any Month During a Season By A Rookie |
AL | Rudy York | Detroit | 18 | August | 1937 |
| NL | Aristides Aquino | Cincinnati | 14 | August | 2019 | |
| Most Home Runs In Any Month During a Season By A Switch Hitter |
AL | Mickey Mantle | New York | 16 | May | 1956 |
| NL | Ken Caminiti | San Diego | 14 | August | 1996 | |
| Record | LG | Name(s) | Team(s) | Data | ||
Home Runs in a Month RecordsHome Run Records By Each Month of the REGULAR Season |
||||||
| Record | Lg | Name(s) | Team(s) | Data | ||
|
Most Home Runs In March Bold = League Leader |
AL | Khris Davis | Oakland | 4 | 2019 | |
| Matt Davidson | Chicago | 3 | 2018 | |||
| Tim Beckham | Seattle | 3 | 2019 | |||
| Domingo Santana | Seattle | 3 | 2019 | |||
| NL | Cody Bellinger | Los Angeles | 4 | 2019 | ||
| Paul Goldschmidt | St. Louis | 4 | 2019 | |||
| Christian Yelich | Milwaukee | 4 | 2019 | |||
| Charile Blackmon | Colorado | 3 | 2018 | |||
| Joc Pederson | Los Angeles | 3 | 2019 | |||
| Most Home Runs In April April 1 - April 30 |
AL | Alex Rodriguez | New York | 14 | 2007 | |
| NL | Albert Pujols | St. Louis | 14 | 2006 | ||
| Most Home Runs In May May 1 - May 31 |
AL | Edwin Encarnacion | Toronto | 16 | 2014 | |
| Mickey Mantle | New York | 1956 | ||||
| NL | Barry Bonds | San Francisco | 17 | 2001 | ||
| Most Home Runs In June June 1 - June 30 |
AL | Bob Johnson | Philadelphia | 15 | 1934 | |
| Roger Maris | New York | 1961 | ||||
| Babe Ruth | New York | 1930 | ||||
| NL | Sammy Sosa | Chicago | 20 | 1998 | ||
| Most Home Runs In July July 1 - July 31 |
AL | Albert Belle | Chicago | 16 | 1998 | |
| NL | Mark McGwire | St. Louis | 16 | 1999 | ||
| Most Home Runs In August August 1 - August 31 |
AL | Rudy York | Detroit | 18 | 1937 | |
| NL | Giancarlo Stanton | Miami | 18 | 2017 | ||
| Most Home Runs In September September 1 - September 30 |
AL | Albert Belle | Cleveland | 17 | 1995 | |
| Babe Ruth | New York | 1927 | ||||
| NL | Ralph Kiner | Pittsburgh | 16 | 1949 | ||
| Most Home Runs In October October 1 - October 31 |
AA | Jocko Milligan | St. Louis | 4 | 1889 | |
| AL | George Brett | Kansas City | 4 | 1985 | ||
| Jose Cruz, Jr. | Toronto | 2001 | ||||
| Wally Joyner | California | 1987 | ||||
| Ron Kittle | Chicago | 1985 | ||||
| Gus Zernial | Chicago | 1950 | ||||
| NL | Richie Sexson | Milwaukee | 5 | 2001 | ||
| Sammy Sosa | Chicago | 2001 | ||||
| Record | LG | Name(s) | Team(s) | Data | ||
Home Runs in a Month RecordsBy / Through Exact Monthly Dates Within The Season |
||||||
| Record | LG | Name(s) | Team(s) | Data | ||
| Most Home Runs Through April 30th |
AL | Alex Rodriguez | New York | 14 | 2007 | |
| NL | Albert Pujols | St. Louis | 14 | 2006 | ||
| Cody Bellinger | Los Angeles | 2019 | ||||
| Christian Yelich | Milwaukee | 2019 | ||||
| Most Home Runs Through May 31st |
AL | Ken Griffey, Jr. | Seattle | 24 | 1997 | |
| NL | Barry Bonds | San Francisco | 28 | 2001 | ||
| Most Home Runs Through June 30th |
AL | Ken Griffey, Jr. | Seattle | 32 | 1994 | |
| NL | Barry Bonds | San Francisco | 39 | 2001 | ||
| Most Home Runs Through July 31st |
AL | Jimmie Foxx | Philadelphia | 41 | 1932 | |
| Babe Ruth | New York | 1928 | ||||
| NL | Barry Bonds | San Francisco | 45 | 2001 | ||
| Mark McGwire | St. Louis | 1998 | ||||
| Most Home Runs Through August 31st |
AL | Roger Maris | New York | 51 | 1961 | |
| NL | Barry Bonds | San Francisco | 57 | 2001 | ||
| Most Home Runs Through September 30th |
AL | Roger Maris | New York | 60 | 1961 | |
| Babe Ruth | New York | 1927 | ||||
| NL | Mark McGwire | St. Louis | 70 | 1998 | ||
| Record | LG | Name(s) | Team(s) | Data | ||
| Home Runs in a Month Records | Research by Baseball Almanac | ||||||

The October record for home runs was four in the National League (creating a three league tie) until Sexson & Sosa set new records in 2001. Before them the record holders were Dave Parker (1985), Mike Schmidt (1980) & Ned Williamson (1884).
Do you know how many of the home runs in a month record holders are members of the 500 Home Runs Club? Check the page and see for yourself.
No comprehensive weekly home run records yet, but the Major League record is ten set by Frank Howard of the Washington Senators (AL) between May 12th through the 18th of 1968. The next closest player to that mark is Shawn Green who had nine for the Los Angeles Dodgers (NL) between May 19, 2002 and May 25, 2002.