TDW,
Since SH2/DC we have specified weather conditions for singleplayer and multiplayer missions. But the player must know the difference between different weather, f. e. day/night, foggy day or not, windy day or not.
Could you think that you can put the weather/time controller to each single/multi mission like on the picture or before mission starts?
Look what I found (edited by EditPad / clone of notepad):
Small changes in file:
...and effect...