The ice is officially out on Rainy: http://www.ifallsdailyjournal.com/node/2900
The official part means that you can travel by boat from Ranier to Kettle Falls. We fished Black Bay on May 1 and found 52-58 degree water. Some have been fishing pike on open bays for 2 weeks. What’s really remarkable is that we drove wheelers out April 15 on 30-36″ of ice and some were still driving pickups!