-----
What you can do with Content Manager now
・Quick Drive: practice, hotlap, time attack, drift, race, weekend:
(中略)
・Drive in real conditions (for track’s or your location) based on actual time, temperature and weather;
(以下略)
-----
別のスレッドになりますが、下記の記述もありました。
-----
Content Manager provides an automatic weather selection by real weather data.
Select “Real conditions“.
Daytime, temperature and the weather is selected by data from OpenWeatherMap
-----
もうちょっと具体的なドキュメントもあった気がしますが見つかりませんでした(^^;