What I call this is " bracketing" the wind. It is definitely desirable to do this if there is enough time to observe multiple wind cycles. Determining the low wind speed and the gusty wind speeds gives you the upper and lower limits as well as your average. Frank has talked about this a few times also.
There are a few tweaks I use to the BC method, which is what this is, that can make it more accurate and flexible. I haven't seen anyone else do this part, but it has worked extremely well for me. The BC method assumes a projectile with a muzzle velocity of 2,800 fps, and an altitude of 2,000 ft ASL (28.0 Hg).
+/- 200 fps = 1 mph adjustment of your basic wind (MIL wind) for your bullet. (Ex: 3,000 fps = +1 mph, 2,600 fps = -1 mph)
+/- 2,000 ft elevation change = 0.5 mph change in basic wind. (Ex: Sea Level = -0.5 mph, 4,000ft elev. = +0.5 mph)
So, some 6.5 guy shooting his Creed at 2,000 ft with a G1 BC of 600+ @ 2750 fps - 2850 fps will have a basic wind of 6 mph. Same guy at sea level figures 5.5 mph. Same guy goes and shoots in Colorado with Frank at 6,000 ft figures it at 7 mph.
6.5 Grendel guy at 2,600 fps can subtract 1 mph from all conditions above. 6.5x284 guy shooting 3,000 fps can add 1 mph to all conditions above.