If weather.com says 20-25mph winds, I'm at the field. Those numbers are for the town/city/region or whatever, it's usually more windy along the foothills where we fly.

Last week was a few days of 20-25mph. Planes could not be left unattended on the ground, folding chairs and canopies could not be used, and planes had to be manually carried and placed on the strip, often needing their tails held in place until ready for taxi. I was the only guy with a powered plane, one other guy flew a glider, one other guy watched, no one else showed up. Could not wear a hat and sunglasses blew off my face. It was windy.

F3A regulations, for national competition, limit flying to 30mph winds and below. I try to fly in anything (wind) up to that.