We went fishing in the boat 5 days ago and tested the water temp with a pool thermometer and here in Iowa it was 43 degrees in the Iowa river. I thought it would be warmer maybe around 45 too 48 so the temp kinda surprised me. Its been cloudy here for around 2 weeks and warming up slowly. The fish usually start to go here around 45 too 50 degrees, at 55 they bite fair, so its going to be a few days yet. Even the lakes here are warming up slowly. Good luck