I made the mistake of making a quick u-turn last year when I first started cycling. Problem was there was a 45 mph headwind, not too unusual where I live in the fall and spring. I was going slow so just went down on pavement in a cul-de-sac. So yeah, high winds is something I really have to deal with all the time. Also got blown off the road by crosswinds twice but was able to stay upright in the grass.