Western suburbs of Chicago, IL. Summer it’s 77-79f (25-26c). Winter it’s 65-69f (18.3-20.5c).
In summer we open the windows at night and let the cooler air in and when the sun comes in I close the windows and run a dehumidifier to quickly bring down the relative temp upstairs especially. Helps a bunch.
When our new kid comes I will have to def adjust these numbers much closer to 72f (22c).
I was talking to friends who live nearby and essentially keep it at 72f (22c) year round and almost never open their windows they were using like 1040kwh-1600kwh per month last month where we were using 309kwh or about 50 bucks a month. This was for July. I think we may be the weirdos and we will have to get more on their level with a newborn.