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Yes, UCD. I did a couple summer sessions as a TA and there were nights it never cooled down. It was only a couple weeks but it must have been in the 90s at night because you would sweat just standing outside.
Here in the bay, the best I have done is had the temp readout just say HOT on my truck. There was a day at the track where they shut down the track for a few hours because it was too hot but I don't recall what temp it was. A couple people passed out driving and crashed, it was a mess.