I made a session with variable weather, but I am disappointed because the lighting remains the same, regardless of the weather. I have seen the rain coming down on a sunny day, but this is a quite rare occurrence: usually the lighting during a thunderstorm is radically different from that of a sunny day - except in Trainz, of course... 
I found this to be a bit annoying, so I wondered: can the environmental settings be altered in-game? I looked for some scripting function capable of performing this task, but I found none.
Does anybody know if this is possible?

I found this to be a bit annoying, so I wondered: can the environmental settings be altered in-game? I looked for some scripting function capable of performing this task, but I found none.
Does anybody know if this is possible?