It will be hot, or mild or cold or any combo of those three. (then there's the wind and rain variable)

Seriously, I'm not sure you can plan on typical. Averages are in the 60's for highs and 40's for lows. What you actually get, could be way different.

Check this link for a reasonable short range forecast. http://www.weather.gov/forecasts/graphical/sectors/illinoisWeek.php?page=2&element=Wx