Having weather in ranked and multiplayer, will be a nice thing to had.
Players will need to adapt and use their creativity.
-Army will colide in the midle of the fog, not ready to a figth.
-Enemy will set up siege weapon at nigth, and start the invasion at day, when every one sigth comme normal. (Or risk a nigth attack, has you attack from the shadow of the fire arrows)
-At nigth, use wood to torch a ligth, for extra sigth, but allowing enemy units to see your at extra range the torched unit.
-Winter that comme, unable to gather food, excep from hunting, if there is something to hunt left.
-Snow that slow down units, and stall siege weapons.
-Ice river crossing.
-Set enemy forest on fire, when there is a dry season.
-Spring is here, new tree grow where old one have fallen and animal reproduction.
-The land become mud in rain, you will not be able to evade arrow or siege weapons, whit your knigth or units, has slow has they can move.