Lake Platte is a lake in South Dakota, in the United States.
Lake Platte took its name from nearby Platte, South Dakota.
The average temperature is 10ðC . The warmest month is July, at 26ðC , and the coldest is January, at âÂÂ7ðC. The average rainfall is 801 mm per year. The wettest month is August, at 110 mm of rain, and the driest is January, at 24 mm.