Cheyenne River Indian Reservation, SD 7-Day Weather Forecast

Cheyenne River Indian Reservation Weather Forecast

Cheyenne River Indian Reservation, SD Weather Forecast Date: 1107 PM MDT Sat Aug 29 2026

Weather forecast for Cheyenne River Indian Reservation, SD

Tonight Lo: 69°F Lo: 21°C	Tonight... Mostly cloudy with a 50% chance of thunderstorms. Near steady temperature in the upper 60s. East winds 10 to 15 mph with gusts up to 30 mph.
Sun Hi: 89°FHi: 32°C Lo: 55°F Lo: 13°C	Sunday... Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the upper 80s. East winds 5 to 10 mph.
Mon Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C	Monday... Mostly sunny. Highs in the mid 80s. West winds around 5 mph, becoming southwest with gusts up to 20 mph in the afternoon.
Tue Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C	Tuesday... Partly sunny. A chance of showers in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50%.
Wed Hi: 89°FHi: 32°C Lo: 61°F Lo: 16°C	Wednesday... Partly sunny. Highs in the upper 80s.
Thu Hi: 89°FHi: 32°C Lo: 61°F Lo: 16°C	Thursday... Partly sunny. Highs in the upper 80s.
Fri Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C	Friday... Partly sunny. Hot with highs around 90.