That morning my family and I were sitting in our car, ready to make a trip into town.

In the previous sentence, does there need to be a comma after "That morning?" I think there does but I'm not entirely sure.

A comma is not needed. It's such a short phrase, that we don't need to set it off with a comma.

Ok, thank you.

You're welcome.

To determine whether a comma is needed after "That morning" in the given sentence, you can consider the rules of comma usage. Specifically, you should consider whether the phrase "That morning" is an introductory phrase or a dependent clause.

An introductory phrase is a group of words that provides additional context or sets the stage for the main part of the sentence. It is separated from the main clause using a comma. In this case, "That morning" could be considered an introductory phrase because it provides timing information and sets the context for the events that followed.

Therefore, the sentence would be correctly punctuated with a comma after "That morning":

"That morning, my family and I were sitting in our car, ready to make a trip into town."

By adding the comma, it helps to clearly indicate the separation between the introductory phrase and the main clause.