State forecast for South Dakota

Today...Partly to mostly sunny. Highs from the upper 70s northeast to the 80s elsewhere.

Tonight...Clear to partly cloudy. Slight chance of thunderstorms southeast late. Lows in the 50s to lower 60s.

Sunday...Partly cloudy. Slight chance of early morning thunderstorms southeast. Chance of afternoon thunderstorm west through northeast. Highs in the 80s to lower 90s.

Sunday night...Mostly cloudy with a chance of showers and thunderstorms. Lows from near 50 west...To the lower 60s southeast.

Extended forecast...

Monday...Partly cloudy to mostly cloudy. A slight chance of showers west. Chance of showers east in the morning. Cooler. Highs from the upper 60s far northwest...To the upper 70s far southeast.

Tuesday...Partly cloudy. A slight chance of thunderstorms west. Lows 45 to 55. Highs in the 70s.

Wednesday...Partly cloudy. A chance of showers central and northeast. Lows in the 50s. Highs in the mid 70s to lower 80s.