From Chief Meteorologist Mike Modrick:
A Warmer Week
Welcome to an early taste of Summer! June 1st, Thursday, will be our warmest day of the week with highs in the 80s. Then an increasing chance at thunderstorms by Friday will continue the Summer theme, but take us back into the 70s again.
Isolated thunderstorms are possible over the Black Hills as early as Thursday afternoon. Friday is our most likely day for storms, but every day into the weekend and to start next week could bring an isolated thunderstorm in the heat of the afternoon.