If planning on heading out onto the water for some recreational boating or swimming this summer, you should both know the weather forecast before you leave, as well as check on the weather while you’re out. Boating on cold water is inherently very dangerous for the unprepared. You should know some information & facts about safe boating and swimming before you go out. Even in the summer, prolonged immersion in water temperatures below 70 degrees Fahrenheit can produce hypothermia. Always carry a life jacket.