I can pull up some summary data (e.g. averaged across a month) at sites like https://www.aos.wisc.edu/~sco/clim-history/7cities/madison.h...

Graphs such as https://www.aos.wisc.edu/~sco/clim-history/stations/msn/MSN-... show the average high, mean, and low temperature.

This is even more pronounced if you look at the summer (June, July, August) temperatures - https://www.aos.wisc.edu/~sco/clim-history/stations/msn/MSN-...

You can also look and, while it isn't the daily records, you can see the daily temperatures - https://www.aos.wisc.edu/~sco/clim-history/stations/msn/msn-... for this year so far.

Or for record high lows ("the low has never been this warm").

Indeed, this would be both interesting and an important control metric.