The International Space Station will be visible for six minutes Tuesday evening, starting at 6:13 pm CST. Clear skies and light winds should make for good viewing.
Visit https://spotthestation.nasa.gov/home.cfm for viewing times at your location.
We saw it a couple of years ago when when we were camping at Rushing River. We spotted what looked like a brighter than usual satellite moving across the sky. I suggested it may be the space station, and indeed, when we looked up online where the space station was at that moment, I was right!
It's funny, because I spotted it over Manitoba, and by the time I checked the website (like a minute or two), it was over Montreal.