Some of the ground physics might be a bit dodgy at present. According to a translated post by the developers from the Russian forum, it seems we still have about 50% of the game's features being optimized and not yet released, stuff that will gradually be available with the patches.
For example, after one my first sorties when i first got the sim, i tried to taxi a 109 from the runway to the hangars. When my wheels moved off the grass surface and touched the tarmac in front of the hangar, the game engine treated it as a collision with the aircraft breaking up and jumping up in the air
That being said, i find that landings are easier for another reason too and that's something that's actually realistic. It seems that the sense of speed and altitude above ground is much better than IL2:1946 and that makes it much easier to accurately judge your approach and flare.
As for winds and weather effects they are definitely there, i just don't know how many and which missions have them to enough severity that they would be noticeable. For example, the cross country flight in the QMB seems to have a definite crosswind just as you spawn on the airfield. If you choose a light airframe like a Tiger Moth, you can see that it weather-vanes to the right before you start the engine.
Since the weather is static and not dynamic yet, the best way to know is to open the mission in FMB and see if any weather layers are enabled for the particular mission, but overall it's in the game and it works. Another forum user has also done some testing with extreme crosswinds recently and posted his findings via a youtube video.