I never figured my CPU would overtemp, so I left on the overheat protection monitor. I came home to this:

Actually it is fine! I had the voltage set low (1.77Vcore) and the processor clocked to 2200 MHz or something because it was really warm out. I went to work, then watched a movie, it got about 0 degrees F out, came home and saw this. All I can figure is the BIOS can't understand temperatures below -8 degrees Celcius. So the only thing I could do to remedy the situation was up the Vcore and up my clock rate above 2400 MHz... what a shame.