State forecast for S.D.

Today...Mostly cloudy with a chance of showers and thunderstorms west. Partly cloudy east with a slight chance of thunderstorms late near the missouri river. Highs in the mid 60s northwest to the mid 80s southeast.

Tonight...Mostly cloudy. Showers west. A chance of showers northeast. Scattered thunderstorms southeast. Lows in the mid 40s northwest to near 60 southeast.

Saturday...Mostly cloudy with a chance of showers. Cooler with highs in the mid 50s northwest to the upper 60s southeast.

Sunday...Decreasing clouds. A chance of early morning showers southeast. Lows in the 40s west to the mid 50s southeast. Highs in the lower to middle 70s.

Monday...Partly cloudy. A chance of afternoon and evening thunderstorms west. Lows in the lower to middle 50s. Highs in the mid 70s to mid 80s.

Tuesday...Partly cloudy. A slight chance of thunderstorms southeast at night. Lows in the mid 50s to lower 60s. Highs in the 80s.