You see, there’s no such thing as a simple “rain” setting in Forza 7. Not for Sebring or the Nürburgring, or Brands Hatch, or any other track where wet conditions are available. Instead, the team has created a system that can smoothly transition through multiple weather conditions per track, and those conditions can (and often will) change throughout a race. You might start off with gray skies and fog on a track like Sebring, only to find yourself in the middle of a thunderstorm two laps later. The lights might go green at Silverstone during a light rain, only to find drivers in dry conditions by the end of Lap 2. As in the real world, conditions change and sometimes change quickly, and it’s up to drivers to react to those changes.
Those dynamic conditions extend to time of day too. Turn 10 is building on the sky technology that was first seen in Forza Horizon 3, capturing real skies that bring life, motion, and color to every track in the game. Check out the screenshot of the observation tower at the Circuit of the Americas against a darkening sky above – one glance is all it takes to recognize a Texas sky at dusk. Even Laguna Seca (below) – a track that has been in Forza Motorsport since the very first game; a track that all of us have driven hundreds, if not thousands of laps on – feels completely new in Forza 7.
... Once the race is over, if you go back to play that exact same race in the campaign, your conditions may be completely different; in fact, you may not encounter rain at all. The team has introduced probability into the various race conditions scenarios; meaning that there is a percentage chance that the weather conditions might (or might not) change.