The Winter Theme mod is coming but for now we have this falling snow mod. It uses the exhaust as a trigger to spawn the snow so if you use a mod without exhaust add one or else the snow will fall but not follow the truck.
If your map of choice starts with the default uaz then the snow will not follow the car because the uaz has no exhaust code in the xml. If you for example use on of the SID mods then check the xml code. SID often comments out the exhaust code (look like and you should be fine.
** This weather mod was tested on a winter theme mod that is not yet released **
– It has the snow showing in water reflections.
– Particles that float up off tires glitch has been greatly improved and only does it once in a while.
– The snow fall emit count has been tweaked and timing of falling particles after being emitted has also been tweaked.