It’s forecast to reach 73 °F at 9:30 this morning and not fall back below that temperature until Friday evening.
It’s going to be ≥ ~80 °F for 60+ hours (this afternoon–early Thursday) 🥵
PJM (Chicago) seems confident they’ll be able to handle the load, but MISO (rest of the midwest, including Michigan) is issuing capacity advisories.
It would not be crazy to charge your stuff and keep some extra water on hand over the next few days.