'that in New York' or 'that of New York'?

[Anonymous]

The sentence is

You may not realize the weather in Barbados during Christmas is like
New York in June.

So I think this should be changed, like "....is like that in New York...", but
some say "...is like that of New York...".
Do I have to use 'that of ...' whenever the same noun is repeated in other place of the sentence?

Always appreciate your help.

[Francois]

Yes, when you refer to the attributes/properties/possessions of the noun.
A typical mistake (for French speakers at least) would be to say "like the one of New-York" -- wrong.
Correct is "like that of New-York".

FRC

[MikeNewYork]

The sentence is

You may not realize the weather in Barbados during Christmas is like
New York in June.

So I think this should be changed, like "....is like that in New York...", but
some say "...is like that of New York...".
Do I have to use 'that of ...' whenever the same noun is repeated in other place of the sentence?

Always appreciate your help.

Informally, the original is fine. Formally, "is like that of" or "is like that in" would be better.

It depends on the sentence. If you are comparing similar nouns, "that of" is not necessary. Barbados is like New York. The weather in Barbados is like that/the weather in New York.