Like Minn said, it depends on a lot of things. A big part of it is where you live. Winds that may ground some are normal flying days for others. When Minn and I were in Dayton covering their airshow we got a laugh at the warbird guys talking about "the bad wind" and "it was too much to fly". All I could think was "what a gorgeous day to fly"!!!!! I would guess the wind was 5-10 mph!!! But here in Oklahoma that is a GOOD day of flying, and we don't shut down until it gets to 15-20+

Ken