State forecast for S.D.

Today...Mostly cloudy with a chance of thunderstorms far southeast. Mostly sunny elsewhere. Highs from the mid 70s northeast to around 80 west.

Tonight...Mostly clear except partly cloudy far southeast with a slight chance of evening thunderstorms. Areas of fog east after midnight. Lows from 50 to 55 west and far north to near 60 southeast.

Thursday...Partly cloudy...With a chance of thunderstorms west and central at night. Highs from near 80 far east to the upper 80s south central.

Friday...Mostly cloudy and cooler. Showers and thunderstorms likely in the morning southeast...Otherwise a chance of thunderstorms over the state. Lows in the lower 50s far west to the lower 60s southeast. Highs in the lower 70s.

Saturday and sunday...Mostly cloudy with a chance of showers. Lows in the mid 40s west to around 50 southeast. Highs in the mid 60s northeast to 70 to 75 southwest.