Here, the sentence assumes "future" or "will happen" tense. In this case, 会 is used here.

可以 is used when specifying capability of the subject. For instance

我可以写中文。

which means "I can write Chinese". As an alternative for the translation, 可能 is used to indicate possibility of the event. So another way to express the English sentence is

今天下午会刮风。