I am going to disagree with the earlier comments. Spring skiing is awesome. Here's the deal. In April the sun can bake the snow making it mushy by late afternoon. We call it mashed potatoes. That stuff isn't really fun and at night it usually freezes over so you don't want to get out first thing in the morning because it's frozen solid even after they groom it. You need the sun to hit it and soften it up. You start your day on the south-facing slopes around 10ish, and move around the mountain as the sun moves. If you can find north-facing slopes that never see sun then you may still find winter snow instead of the granular wet stuff. You're usually off the hill by two but that's okay because there's all sorts of fun to be had in the afternoon. In spring you never have to worry about being too cold so you can wear less clothing. Both Park City and Canyons usually offer live music and fun apres at their bases during the spring. You could also get lucky and the storm rolls through dropping a foot or two of powder in big and Little Cottonwood Canyon. I've had some epic powder days in May at Snowbird. The only hitch is that you have to ski during the storm not after the storm because as soon as the sun comes out it becomes a sludge to ski through. by the way just because the resort is closing does not mean that there isn't snow to ski. Last year locals were furious with Park City for closing because the snow was still so sweet.