- January 1, 1970
- January 2, 1970
- January 3, 1970
- January 4, 1970
- January 5, 1970
- January 6, 1970
- January 7, 1970
- January 8, 1970
- January 9, 1970
- January 10, 1970
- January 11, 1970
- January 12, 1970
- January 13, 1970 (This strip is adapted in the segment "Lost Blanket" from The Charlie Brown and Snoopy Show episode "Snoopy: Team Manager")
- January 14, 1970
- January 15, 1970
- January 16, 1970
- January 17, 1970
- January 18, 1970 (This strip is adapted in Play It Again, Charlie Brown, in the segment "Piano" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy's Cat Fight" and in the episode "Just for Love" from the 2014 French TV series Peanuts)
- January 19, 1970
- January 20, 1970 (This strip is adapted in Play It Again, Charlie Brown and in the title segment of The Charlie Brown and Snoopy Show episode "Lucy Loves Schroeder")
- January 21, 1970
- January 22, 1970 (This strip is adapted in A Charlie Brown Valentine)
- January 23, 1970
- January 24, 1970
- January 25, 1970
- January 26, 1970
- January 27, 1970
- January 28, 1970
- January 29, 1970
- January 30, 1970
- January 31, 1970
| ← December 1969 | February 1970 → |