It's entirely possible that the problem could be a bad connection..
When a switch gets water in it, it rarely ever blows a circuit unless it's a good amount of water. A paddle type switch seems to be more more likely to get wet inside... A damp rag should be fine, a soaking wet rag could hold enough water to bridge the terminals. A short can cause tremendous heat in a very short burst. This heat can change the physical properties of the wire, by expanding.
This change can cause;
a less than perfect connection to fail,
a wire that has been damaged can fail,
the breaker may have failed.
If you have a meter, you could open the panel and check the breakers for power. Just clamp to ground and use the other lead to probe the terminals on each breaker. Each terminal should read 110-125 volts. Federal Pacific breakers are prone to failure at the power connection in the panel. I have seen them burn the power socket in the panel so bad that a new breaker will not fix the problem.
If you don't know where the ground is inside a panel, call an electrician.
Better safe than sorry, or hurt..
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