Daytona, No Start

Ok, I've had this problem for a long time now. After a good rain, the car refuses to start. I can hear the fuel pump engaging but there is no spark. Usually, after being left overnight, the car starts again. The cap, rotor and wires are fairly new and have been replaced since I noticed the problem. Any suggestions of what to try or look for? Thanks in advance...

coil, check wires leading to and from

corroded connections to the ECM under the hood, bad pickup in the ditributor.

One of those ought to fix it.

Slantsixness