Wind in the SEA's and off line, can be set at 2,000 foot elevations from ground level to 30,000 feet and above.
Any speed from 0 to 127 can be input, as well as any of 8 directions, N, NE, E, SE, S, SW, W, and NW.
Each 2,000 foot layer can be set to have differing directions and speeds.
Up drafts and down drafts can also be input by using the rise (+ or -).
We have used some wind in various scenarios over the years, most memorable was having to turn carriers into the wind to take off and land, or you would either over shoot or get blown sideways off the deck. Others have had wind at altitude to make bombing more difficult.
We have also used it sparingly in the Aces High eXtreme Air Racing League to make it a bit harder to fly through hangers, or to eliminate an autopilot being used to get from point A to Point B, as the wind would blow you off course.
I just read where the AvA has used it on occasion, as well, and a recent FSO had a 5 MPH breeze all the way down to the deck.
It may not be a perfect model, but it is useful and brings a different degree of difficulty to any event in which it is used.
As far as weather goes, different cloud files have been loaded for certain events, and there was a couple of terrains that used snow tiles, although there was no snow on vehicles, planes etc., there was snow on some buildings, the ground, and some trees. These terrains are for SEA and off line use, not for the MAs, and are currently undergoing upgrades to fit in, and work, better with the newest AH versions. They will be back eventually.