lhowemt nailed it, it is too soon to know. But not too soon to religiously watch the weather, gauges, snow pack, and guess about it - that's half the fun.
Had a June 15th launch in 2014 and it was ~5.2 per Paradise Earl since the high water had knocked down the lower gauge. We saw lots of rain and cool temps, which was fine with us to keep the water from spiking. Cleared up perfectly for the moose juice and the rest of the float out. Such a great trip!!
We had two 14 foot rafts, 16 footer, and a 17.5 cat. The only size trouble was that of the water... Seeing the cat flip in Wolf Creek is still one of my more clear memories, I didn't think it could happen
"You can't get into whitewater heaven til' you've run the Selway over five feet on the Paradise gauge.."