I rode 4 hours today. Most of it in a sustained 20-25 mph head wind. I was going 12 mph on a flat road pushing around 200 watts at times. Gust were over 40 I'd say. Coming home sure was fun though. I'd say thats windy. But, unless its a hurricane, I grew up in florida, there's not too much I wouldn't ride in. I will ride in just about any weather to avoid my trainer. Its easier to ride in the rain, cold, windy, etc. then it is to skip my ride and try to explain myself to my coach.