I thought I understood the wish clauses but I have just found this example:
Situation: It isn’t raining.
Your wish: I wish it would rain.
Isn't this the situation where I should use the past tense, as this is contrafactual? I have seen many examples with the opposite situation:
It is raining. I wish it was not raining.
Why does the first example then use "would"? Why not
"I wish it was raining"?
EDIT: However, I have also found this sentence in various sources, so I assume it is correct too. But would appreciate some insight from native speakers.