My family and I did the sunrise experience on Haleakala in Maui. Besides being freezing, it was absolutely stunning to watch the sun come up over the rim of the volcano. If you're up for it, you can also hike down into the crater for a few hours, or even days.
Though we'd heard mixed stories of the quality of the view on overcast days, we were blessed to end our stomach turning hair pin drive in the dark up Haleakala to a gorgeous clear day which made for a stunning experience watching the sun rise from above the clouds. Good thing we'd been pre-warned about the need for dressing warmly which allowed us to comfortably wait out the sun as it took its journey over the horizon.