Most of us will stay entirely dry from today right on through the weekend. We'll see a few fair weather clouds build in for the afternoon, with highs near average today. Humidity will slowly decline today, but you'll really notice a difference by Saturday.
Saturday will be more comfortable as far as heat and humidity. We return to the upper 80s on Sunday, so due to warmer temperatures that is probably the better day for the pool this weekend.
A warm front will lift to the north of Indiana on Sunday, so we'll see more cloud-cover and humidity will start to build back in with highs near 88.
On Monday we'll have a better chance for thunderstorms. Few storms could be strong-severe.
By the second half of next week the hottest air that we've seen so far this year moves into Indiana with highs in the mid-90s.