State forecast for S.D.

Heat advisory east this afternoon and early evening...

Today...Chance for morning thunderstorms north central through northeast...Otherwise clear to partly cloudy and hot statewide. Humid east and becoming windy east during the afternoon. Highs in the mid 90s north to 100 to 108 south.

Tonight...Partly cloudy. Isolated thunderstorms south. Lows near 60 west to the mid 70s southeast.

Sunday...Partly cloudy. Chance of late day thunderstorms west and south...Then chance of thunderstorms statewide during the night. Highs in the 90s.

Monday...Mostly cloudy with a chance of thunderstorms. Lows in the 60s. Highs in the 80s.

Tuesday...Chance for morning thunderstorms southeast...Otherwise partly cloudy and cooler. Lows 55 to 65. Highs mid 70s northeast to mid 80s southwest.

Wednesday...Partly cloudy. Lows in the mid 50s to low 60s. Highs near 80 northeast to around 90 southwest.