When was that?
If you look at this estimate of temperature on Planet Earth[0][1] you can clearly see the last time the planet saw > +2C was the Pliocene.
Even if you look more closely at just the Holocene you don't see > +2C anywhere[2]
[0] https://upload.wikimedia.org/wikipedia/commons/5/5f/All_pala...
[1] https://en.wikipedia.org/wiki/Geologic_temperature_record
[2] https://en.wikipedia.org/wiki/Global_temperature_record#/med...