Personally, I think windy days are the worst sort of weather for bicycling. A stiff wind can nearly bring you to a standstill, no matter how hard you pedal, even downhill! And the gusts feel like they might blow you right over, or off the side of the road. Now, on a humid, shadeless day in late summer, I might feel differently. But right now I'm voting: Down with wind!
A flag whips in the high wind