It's clear that we should use Present perfect when we want to show that an action is completed and we have some result. It is also clear that we should use Present perfect continuous when we want to talk about a process and not about a result. For example
I have repaired my bike. (bike is repaired)
I have been repairing my bike. (we don't know if bike is repaired)
But there are cases when an action doesn't imply any result. For example
Has it rained this week?
Has it been raining this week?
Here we see the action "to rain" and it doesn't imply any result here. Do I understand correctly that the only possible difference in the meaning is that in the 1st case the action is not continuous (it started on Monday and finished on Tuesday) and in the 2nd case the action is continuous (it started on Monday and continuous until now) ? Or do we have some other possible differences in the meaning?