State forecast for S.D.

Today...Decreasing clouds west...Becoming mostly cloudy east. A chance of thunderstorms south and east...A slight chance of morning thunderstorms west. Highs from the mid 80s to lower 90s.

Tonight...A chance of evening thunderstorms southwest and northeast...Otherwise becoming mostly clear. Partly to mostly cloudy with scattered thunderstorms southeast. Lows from the upper 50s far southwest...To the 60s elsewhere.

Tuesday...Mostly sunny central...Partly cloudy elsewhere. A chance of thunderstorms southeast...Mainly in the morning. Isolated thunderstorms late afternoon and evening thunderstorms in the black hills. Highs from the mid 80s far east...To the mid 90s west.

Wednesday...Mostly clear. Lows 60 to 65. Highs from the mid 80s northeast...To the upper 90s west.

Thursday...Becoming partly cloudy east...Mostly clear west. Lows in the 60s. Highs from the upper 80s far east...To the mid 90s southwest.

Friday...Partly cloudy. A slight chance for afternoon thunderstorms west...Spreading into the northeast during the evening. Lows in the 60s. Highs from the upper 80s far east and north to the 90s elsewhere.