Is it normal for some rain/water to get inside of the speaker?
It really depends on the speaker placement. You need to stay away from Sprinklers or potential standing water. And it is a good idea to bring these in for the winter months. All access points are protected with liberal application of silicon. But the perforated grill over the speaker will let water to the front of the Cone and surround which are waterproof. But if water accumulates at the bottom of the speaker for any length of time especially during the off season it an cause problems (that is why we recommend bringing them in during Winter months).