- August 1, 1978:
- August 2, 1978: (This strip is animated in The Fantastic Funnies.)
- August 3, 1978:
- August 4, 1978:
- August 5, 1978:
- August 6, 1978: (This strip is animated as a quickie called "Screen Door" in the second episode of Garfield and Friends.)
- August 7, 1978: (The first appearance of Lyman and the start of a storyline about Lyman and Odie taking residence in Jon's house. This and the next strip are adapted as a flashback in The Garfield Show episode "Long Lost Lyman Part 1".)
- August 8, 1978: (The first appearance of Odie.)
- August 9, 1978:
- August 10, 1978: (The first mention of Odie's name.)
- August 11, 1978: (This strip's dialogue is adapted in Here Comes Garfield.)
- August 12, 1978:
- August 13, 1978:
- August 14, 1978:
- August 15, 1978:
- August 16, 1978:
- August 17, 1978:
- August 18, 1978:
- August 19, 1978:
- August 20, 1978: (The end of a storyline about Lyman and Odie taking residence in Jon's house.)
- August 21, 1978:
- August 22, 1978:
- August 23, 1978: (Garfield sheds for the first time.)
- August 24, 1978:
- August 25, 1978:
- August 26, 1978:
- August 27, 1978: (The start of a storyline about Garfield going on a diet.)
- August 28, 1978:
- August 29, 1978:
- August 30, 1978:
- August 31, 1978: (This is the first time Garfield punts Odie.)
| ← Garfield, July 1978 | Garfield, September 1978 → |