You can't change the wind. You can't even detect it directly, although you can detect it indirectly by using a parachute or drop particles. Setting good weather in the Intel Box does tend to reduce its strength.
In this case your best bet is probably to calculate the path the parachute should take, and create a getPos/setPos loop to keep it on that path. The script would detect the parachute's position, compare it to where it should be and if it is not on the correct path give it a nudge in the right direction. It does this seven times a second so the player won't notice.