Interesting ideas with weather:
-Weather impact on players ability to action
--Items to combat such weather (raincoat, sunscreen, sunglasses, rainboots, heavycoat, gloves, etc.)
-Ability abuse in one paticular weather
--Ex: Solar Panels, Fish, Sled, etc.
-Ability abuse in multiple weather conditions:
--Ex: Plants
-Ability abuse in all weather types:
--Ex: CASTFORM!!! :P
Weather immediately reminded me of SMT: Persona 4, playing a crucial role in that game's plot.
On topic; a hidden weather schedule predetermined by the host sounds like a fine idea. Simplistic is probably best with Sunny, Rain, Cloudy. They could of course affect numerous things common in the mafia we know (e.g. inspection results, killing opportunities, lynching opportunities).
1. Persona 4 is an awesome game! :D
2. Agree for initial run, predetermined order is good.
Interested in concocting a way to make this work.