Sorry I can't provide speeds as I never have any idea what speed I'm going. But winds have to be very gusty/stormy to push you around. Basically the same strength wind that would nudge you around with normal clothes on. As for speed, I have to be up around 46/13-15 (gearing) for it to really start becoming annoying. You certainly feel some drag at lower speeds, but for rainy day commutes, my goal is to stay dry (rain) and comfortable (sweat).