- June 1, 1989
- June 2, 1989
- June 3, 1989
- June 4, 1989
- June 5, 1989
- June 6, 1989 (Beginning of a storyline that was later adapted in He's a Bully, Charlie Brown)
- June 7, 1989
- June 8, 1989
- June 9, 1989
- June 10, 1989
- June 11, 1989 (a very rare strip in which Marcie's eyes are visible through her glasses)
- June 12, 1989
- June 13, 1989 (Charlie Brown is revealed to have some feelings for Marcie)
- June 14, 1989
- June 15, 1989
- June 16, 1989
- June 17, 1989
- June 18, 1989 (Snoopy's father appears)
- June 19, 1989
- June 20, 1989
- June 21, 1989
- June 22, 1989
- June 23, 1989
- June 24, 1989 (Ending of a storyline adapted in He's a Bully, Charlie Brown)
- June 25, 1989
- June 26, 1989
- June 27, 1989
- June 28, 1989
- June 29, 1989
- June 30, 1989 (This strip ends the only month of Peanuts without Lucy and Linus appearing, and only of the very few without Lucy after her introduction in March 1952. This strip is also used on the page for July 29 of the Dayspring Peanuts A Year's Worth of Smiles and Blessings Desk Calendar)
← May 1989 | July 1989→ |