NOAA has released a model driven forecast system for the Great Lakes... It is primarily for water temp, level and current although the same page has a nice "nowcast" and windcast for each lake. They use Google maps so you can just select a pin from the map to see the water data.
Great Lakes Operational Forecast

Mike,
This will be nice for later this summer. For now, I think that 44 degree water might be a little cold. Thanks for posting the link.
Jack