My daily oil temps are "normal" as far as I know with Uni's software - 210-220 varying on ambients and how hard the car is being drivien/RPM. At the track in cool weather I have seen 240+ and the same beating on it in the mountains. Those temps are well within the range that modern oils can handle without drama.
Oil temps get to 270ish down here in Satan's butthole on track. Even good modern oils start to break down at that point. I have to back off and I change the oil after track days. I really need an oil cooler, but haven't decided on a strategy yet. Definitely want one with a thermostat.
It gets to 240ish autocrossing in the heat.