won't start when it is raining
 

Anyone have this problem, won't start only when it rains?

Others have reported it and the usual problem is with the distributor. On the bottom plate is a small drain hole tht sometimes gets clogged with debris. If so, clean it so moisture can evaporate out. While you're in there check the condition of the cap and rotor.
Also, creating a signature with your vehicle info is a good idea so we don't have to guess at what you're driving.