Courtesy National Weather Service

It's going to be a hot and muggy day in mid-Michigan today, with temperatures climbing up into the low 90s by mid-afternoon. A warm front has been creeping north, bringing warm, moist, turn-on-the-air conditioning weather.
But it won't last too long. A cold front has been sliding across the Plains. During the day, thunderstorms -- some of them quite interesting -- have been popping up in front of this mass of colder air.
It's expected to move through the Great Lakes early to mid-day Tuesday. The thunderstorms probably will show up late tonight and into the early morning hours of Tuesday.
Because the thunderstorms will come through after dark, and because they'll lose some of their strength over the cold water of Lake Michigan, they won't be as strong as they were when they come across Wisconsin and Illinois earlier today.
Still, they're expected to bring some much-needed rain. About one-quarter to one-half inch of rain is forecast.
We'll still be a little below normal in our precipitation, but the corn and the lawns sure can use it.
The rest of the week: Comfortable.