All of the wind we've had this year so far, and the night I install my new weather station it's as calm as it can get. There is NO wind, or even the SLIGHTEST of breezes to move the cups. The only other thing is that I can't get my barometric pressure to read on my display. Not sure if the sensor is even working at this point.
For anyone interested, it's an Ambient Weather WS-2000 station.