Why is Romes temperature generally warmer than surrounding areas?
There is nothing wrong with the thermometer. It has been checked several times. That observation is taken at the Rome Airport and there is a bit of a microclimate there. The location is nearly surrounded by higher terrain — it is in a geographical feature called a “proverbial bowl”. When air flows up and over higher terrain and then down into lower areas during the daylight hours, it warms up. Rome is located in a lower area surrounded by higher terrain.