Originally Posted by twogypsies
Mid-April snow? A possibility at Bryce as the only one but a low possibility and it wouldn't be much or would last. It would be absolutely beautiful though. Check a weather site for average lows/highs in the area.
Last year there was 4" of snow in Moab the third week of April. It melted in a day, but it was a mess while it lasted. That was an anomaly, but do not discount snow completely. (We were on a canoe camping trip down the Green River, and our shuttle to Moab almost couldn't make it due to the backroad a being a mess. We saw a number of 4x4s that had slipped off the roads due to the messy clay.) We are in Blanding, UT now, 60 miles south of Moab, and temps are in the low 30s at night. We were in Moab last week, and temps were upper 20s at night. If your RV has a heated underbelly, those temps should be fine (they are for us).
For a RV site in SLC, I recommend the KOA on North Temple Street or Pony Express. The advantage the KOA has is the light rail transportation that runs right in front of the entrance. Easy access to downtown, and you can even connect with the ski busses that go to the resorts, if you arrive while the ski bus is still running (it stops in early April). Right now, the ski resorts are all operating, and they generally would be in early April. It isn't the powder conditions Utah is famous for, but still pretty good for spring skiing.