Wait - you are confusing terms here. Truly dynamic weather (which is not what it is in any simbin sim afaik), day-night transition and temperature variations are not what people would refer to as physics in a sim. If it takes til 2009 for LFS to have that stuff... well.. then that's what it takes. *shrug*
The only thing to look at is the hype, the (occassionally heavily-edited) screenshots and the lack of non-edited videos. As soon as you enter the setup screen of a sim that has sliders for setting the force feedback effects for kerbs or "brake vibration" then you surely must know there's something wrong happening.
Yup - and quality-wise it surely puts to shame many of the dx9 supporting sims out there (who don't really seem to use any of the techs that justify dx9 to start with). Amazing what a small dev-team can do with such "retro" technology isn't it?