Most generally, it's 1 yd per 1 MPH (without a shot distance), and I use "1 yd per MPH over full distance (200 yds)" - 150 % of the rule given above.
Wind force on a golf ball is:
Force of Wind = Drag Coefficient * Wind speed.
That's in its simpliest form. So the "rule of thumb" is more of 'layman's speak'. I honestly didn't have a clue who came up with that, and try as I may, I can't get my calculations to get there, unless I'm hitting a 64 degree wedge full power ... then I'm close. Problem is, I can't hit my 64 degree wedge 167 yards.
I'm good with 'layman's speak' if I'm playing an Alt Shot game! Just won't use it with my calculator.
Thanks! Question answered ... just a WAG rule of thumb.
WAG = "Wild A$$ed Guess" lol.
Edit: Just saw your edit, Alosso ... Not meaning to offend. Just trying to get the "x" and "z" components on ball flight based on wind angles.