State forecast for S.D.

Severe thunderstorm watch north until 10 am cdt...

Today...Mostly cloudy north to partly cloudy south. Scattered thunderstorms north...Developing south this afternoon. Severe storms possible. Highs from 80 to 85 north to 90 to 95 south.

Tonight...Mostly cloudy east to partly cloudy west. Thunderstorms likely southeast in the evening...Otherwise chance of showers and thunderstorms over the state. Lows in the 60s.

Friday...Partly cloudy west to mostly cloudy with a chance of showers or thunderstorms east. Highs from near 80 northeast to the mid 90s southwest.

Friday night...Partly cloudy. Slight chance of showers and thunderstorms southeast. Lows in the 60s.

Saturday...Partly cloudy...Very warm and humid. Highs in the upper 80s east to near 100 west.

Sunday...Mostly clear and hot. Humid east. A slight chance of nighttime thunderstorms northwest. Lows in the mid 60s north and west to the lower 70s southcentral and southeast. Highs in the lower 90s northeast to around 100 southwest.

Monday...Partly cloudy and very warm. Slight chance of thunderstorms far west by afternoon...And over the west and north at night. Lows in the mid 60s west to the lower 70s east. Highs in the upper 80s far north to the upper 90s south.