I agree. You should primarily use metform 214 (or the European equipvalent 414) for that.
But in a pinch you can apply the principle that over land, due to surface friction, as you go down the last 1000-2000' the wind will "back" about 20-30 degrees and lose a few knots. (Northern Hemisphere of course)
So if the surface wind is 250/5 the wind at 2000 feet will be along the lines of 270/8 or something like that.
And to be honest, I think that's the sort of answer you were actually looking for, not?