I am attending a virtual conference hosted by the Midwestern Regional Climate Center this week. One of the talks reminded me of the great resources they have on their web site. If you go to https://mrcc.illinois.edu/clim/ and look under Resources, you can find climate maps as well as GIS-based station statistics. They include national maps for things like the number of hours per year with wind chills below several temperature thresholds and the number of hours with heat indices above several thresholds too. I encourage you to visit and check out all the options.