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Custer County topographic maps
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Sylvan Lake
United States > South Dakota > Custer County > Sylvan Lake Resort
Average elevation: 1,891 m
Custer
United States > South Dakota > Custer County
Winter weather is dominated by the conflict between cold Arctic air moving south from Canada, and very warm chinook winds which can produce exceptionally high winter temperatures for the latitude and altitude. For instance, January 19 of 1963 saw the coldest temperature ever of −43 °F (−41.7 °C), yet in…
Average elevation: 1,660 m
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