Add as a preferred source on GoogleAdd Us On GoogleAdd Us On Google Add as a preferred source on GoogleMore August sunshine across Upper Michigan before a stormy turn ahead of the weekend. An incoming Canadian Prairies-based system spreads rain, thunderstorms west to east starting Friday afternoon -- with marginal risks of damaging hail and wind. Humidity levels also increase, leading to feels-like temperature values in the 90s Friday. Storms subside Saturday before another wave to roll across the U.P. late Sunday through Monday.