Have you picked up an SCii or an Ultra Gauge? As redpoint5 mentioned, it is important to monitor. It may be better now with the cooler air (about 70s down there, right?), but you may care about the fan coming on.
Personally, my fan kicking on doesn't bug me at all. The Insight, I watch more carefully, but the Mustang being new(er) and having a grille block within the first few months (to protect the radiator, in my mind it reduces losses in efficiency from damage over time).
Speaking of, that is another benefit. Protection from debris getting in there- bugs, rocks, leaves, and whatever else is on the road.
Many little pings, and even though recently cleaned, one can see the bugs and grime that would normally be covering the radiator.
Welcome to the darkside
Edit:
After closer inspection at full size, this was
not recently cleaned as of the photo. This was after a mod install
before a wash.