The fantastic stretch of early October will carry over into Wednesday before conditions deteriorate heading into the weekend.
Following a windy day Tuesday (with gusts to 41 mph noted at the Manistee Harbor) Wednesday will not see nearly as much wind with almost full sunshine forecasted as high pressure settles in for one final day. Temperatures will climb up to around 70F.
The weather will turn notably wetter and cooler as we head into the weekend. It will be a lot more cloudy Thursday as warmer air works in aloft touching off clouds and also a few passing showers. At this point, any rain Thursday will be light and not all that widespread (very spotty). By Friday, a warm front will lift right across Northern Michigan setting up 70's south of that front along with more humid/muggy conditions along with a continued chance for a few showers/thunderstorms.
The biggest potential for rain and thunderstorms will be late Friday night into Saturday as a strong early fall storm system organizes over the Corn Belt states. In fact, there is a good chance for severe thunderstorms over parts of Iowa/Minnesota/Wisconsin with this system. As this storm system lifts across the Western Great Lakes it will drag a cold front through with rain and thunderstorms likely. Highs Saturday will still get into the upper end of the 60's but tumble into the 50's Sunday with lake effect rain showers on a chilly northwest wind.