I haven't seen anything about weather manipulation either and would love to be able to.
Perhaps some talented modders will be able to expand on the GM client sort of like the DMFI did for NwN.
@Baardvark ?
@Anybody ?
:P
It might be possible. Most of the UI was defined via XML files in NWN; DOS 1 uses Iggy (basically Flash) which was not accessible by scripts. We don't know how DOS 2 will handle this.
We'll have to see what we can work with after release.