Jackson Lake Swims - Grand Teton National Park, Wyoming

In my experience in California and Colorado, big lakes at similar elevations are unswimmably cold in June, with water temps under 50F. Except maybe the recent Bering Strait relay swimmers ;-)

In my experience in California and Colorado, big lakes at similar elevations are unswimmably cold in June, with water temps under 50F. Except maybe the recent Bering Strait relay swimmers ;-)