Hello. In my league's Abu Dhabi iGP (race id: 19489501), the temperature for many laps was far from the actual temperature at the Yas Marina Circuit, which was 31C. The race started with a temperature of 20C, then spiked up to 30C on lap 27, and then dropped to 21C on lap 41 and stayed that way till the end of the race.
This was a one-time occurrence. In nearly all other races, the temperature behaves as expected.
P.S. I am a Computer Science major student and I have a reasonable set of programming skills. If the iGP developers are understaffed, I may be able to help with some debugging!