I noted what appears to be an unusual effect during rain storms (light to heavy) although it is significantly more pronounced during heavy rain storms.

During heavy rain storms the rain has varying levels of contrast against the surrounding environment. This causes varying levels of visibility however it creates a halo of clear visibility surrounding the character model of approximately 25 to 30 metres due to zero contrast with the ground and dark coloured environment objects.

This effect is present during light to medium levels of rain but is reduced significantly.