won't start when wet outside on 1998 Oldsmobile Bravada

98 oldmobile bravada will turn over but won't start when it is wet outside or lots of moisture in air why does it do this. getting annoying

2 answers
Ignition system weaknesses tend to show up when it's wet. This is because the spark can arc and not connect when moisture is abound. Start by looking at ignition components (plugs, wires, etc).
Probably going to be moisture inside the distributor cap. Wayne