Can you override weather probabilities by script action?

Maurvir

As the title states, is it possible to dynamically alter the weather probabilities by script? The idea here is that, since older areas that don't have both a day and night tileset can't appropriately support fog, would it be possible to detect the day/night change and dynamically switch the fog and rain probabilities?

Alternately, is there a way to detect when the engine has changed the weather in order to override it?

Thanks!