- June 1, 1970 (Beginning of a storyline which was later adapted as the segment "Thiebault" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy the Psychiatrist")
- June 2, 1970
- June 3, 1970
- June 4, 1970 (The first appearance of Thibault)
- June 5, 1970
- June 6, 1970
- June 7, 1970
- June 8, 1970
- June 9, 1970 (Thibault does not appear again until July 30, 1973)
- June 10, 1970
- June 11, 1970 (Snoopy first appears as the World Famous Tennis Player)
- June 12, 1970
- June 13, 1970 (Snoopy wears sunglasses, but his alter ego, Joe Cool, wasn't a thing at that time)
- June 14, 1970
- June 15, 1970
- June 16, 1970
- June 17, 1970
- June 18, 1970
- June 19, 1970
- June 20, 1970
- June 21, 1970
- June 22, 1970 (Woodstock, who had appeared in the strip since March 4, 1966, is finally named)
- June 23, 1970
- June 24, 1970
- June 25, 1970
- June 26, 1970
- June 27, 1970
- June 28, 1970
- June 29, 1970
- June 30, 1970
← May 1970 | July 1970 → |