95 cirrus runs rough when humid or raining

my 95 cirrus lxi runs very rough and is hard to stay running only when it is raining or very humid. otherwise the car runs great. does anyone have any ideas? i changed the plugs, wires. dist. cap and rotor, replaced radiator, motor mounts, air filter, cleaned the throttle body, valve cover gaskets, oil, master cylinder, and probably a few other things.

try checking fuel pressures. Also, replace fuel filter! Chances are, your dist is failing, very common problem, in these cars. let me know.
Crashdummy

It was the distributor. thanks! easy fix.

My 98 chrysler is having the exact same problem, do I need a new distributor cap or just a new distributor, or do I need both??? Montgomery which did you replace to get your car started again?