I have a 1998 Chevy Lumina. The "Volts" light came on while driving home. As time passed, everything started to dim (dashboard, radio, headlights, etc.). When I got home everything went out as though the battery died. An hour later I went out and the car started right up. The "volts" light was still on.

Sounds like your charging system needs some attention.
1st check battery for voltage should be 12.50 or better with car off
2nd, start car check battery for voltage again should be 14.0 to 14.75 volts.
3 with running turn on headlamps and check charging voltage again if your voltage dropped to battery voltage your charging system is not working.

I would say if the car stays running after u jumped started it I would replace the battery

You may have a defective headlight switch, replace that first.

Your alternator is out. Those are classic symptoms of alternating going out. The alternator recharges your electrical system and when it goes out a list of strange things go on inside the dash, and you won't be able to go very far on just a battery. I'm glad you at least made it home. But yes you will need a new alternator for sure. Please rate this response so I can get my ratings back up to 90% at least.

sound like pass key security system has failed
dealers the best bet

try to get a starter for it ,there,s plenty of power but the starter is gone

I recommend getting an actual voltage, ampres check to see what the alternator is putting out, volts and amps. You should be able to get the charging, battery load test and the starter draw all tested together. That's where I would start.

Have you tried turning up the dash light dimmer switch as bright as it can go? I will dim slightly but will still be alluminated

that could be a bad switch. the dim switch may be the problem. its on the lefts side. with the cruise control switch.

your alternator is likely on its way out. you should take your car to a trusted mechanics shop and have the charging system tested.Its only a matter of time until the alternator stops charging and you'll be stranded on the side of the road
Hope this helps..........Good Luck!