We've camped here several times during the spring, summer and fall in our 26 foot toyhauler.  Gets pretty hot in the heat of the summer but great in the shoulder seasons.  Dirt access road that can get impassable when it rains (and believe them when they say impassable!).  Not a lot of dispersed camp sites, maybe 6 or 7 in this immediate area.. if you drive down the road toward Lake Powell (Highway 389).. there are more places to camp, but the road can get washed out or blocked by falling rocks along the way, so be prepared to turn around and head back towards Cannonville.