They have/had skeletons that pop at night unfortunately people complained. Their first set of notorious monsters appear only during certain time frames according to time of day/weather, but unfortunately people complained about that too.
...unfortunately many of those same people are here in this thread already complaining about the very things they had a hand in taking away from the game (well not really, I mean I kinda doubt their specific input even registers with the developers for the most part compared to their counterparts in the JP forum). Still kudos.
I'd like for them to find a way to again introduce some tie-ins to weather/time of day and they have talked about doing this several times. Unfortunately due to complaints from segments of the player base anything like that likely would have to pass this test:
Will it run the chance of killing someone who is not directly seeking it out?
Will it cause someone to have to wait for more than 5-10 minutes to do the piece of content they are wanting?
Will it give an "unfair" disadvantage to someone who chooses to ignore it because it is too complex?
If the answer to any of these is yes, I think chances are we won't be seeing it soon.
So I think having many effectively dangerous night zones, powerful elemental bonuses during weather, ties to crafting/gathering, or quests/events/future content of any kind tied to these things is pretty unlikely.