- December 1, 1970
- December 2, 1970
- December 3, 1970
- December 4, 1970
- December 5, 1970 (Ending of a storyline adapted in the segment "The Dance" from The Charlie Brown and Snoopy Show episode "Snoopy the Psychiatrist")
- December 6, 1970 (This strip is adapted in A Charlie Brown Celebration)
- December 7, 1970
- December 8, 1970
- December 9, 1970 (A Charlie Brown Christmas' 5th Anniversary)
- December 10, 1970
- December 11, 1970
- December 12, 1970
- December 13, 1970
- December 14, 1970 (This strip and the following two strips are adapted in the segment "Piano" of the 1983 The Charlie Brown and Snoopy Show episode "Linus' Security Blanket")
- December 15, 1970
- December 16, 1970 (Beethoven's birthday)
- December 17, 1970 (The first time Snoopy consults his Beagle Board)
- December 18, 1970
- December 19, 1970
- December 20, 1970
- December 21, 1970 (This strip and the following strip are adapted in the episode "Let it Snow" from the 2014 French TV series Peanuts)
- December 22, 1970
- December 23, 1970
- December 24, 1970 (This strip and the following strip are adapted in the episode "Let it Snow" from the 2014 French TV series Peanuts)
- December 25, 1970
- December 26, 1970
- December 27, 1970 (This strip is adapted in the episode "That Day" from the 2014 French TV series Peanuts)
- December 28, 1970
- December 29, 1970
- December 30, 1970
- December 31, 1970
| ← November 1970 | January 1971 → |