In what situations is it preferable to use arrays for storing data?

Arrays are preferable to use when:

• The size of the data is known in advance.
• Fast access to elements by index is required (operation O(1)).
• The size of the collection is not planned to be changed often (adding or removing elements).
• Minimizing storage overhead is important (arrays occupy less memory than lists).

Example: storing a fixed set of temperatures for a week, where the number of elements does not change.