1 0 petemate I have never heard about wind alone being a factor, but if there is rain, it could very well result in degraded reception.
1 0 tminus7700 First, there is NO SUCH THING as a 'digital' antenna. ALL antennas are analog devices. For a digital receiver they are receiving an analog signal that happens to be modulated by digital data. Like this: [QPSK](https://www.maximintegrated.com/en/app-notes/index.mvp/id/686)
Wind can do two things that could effect the received signal. One is the trees outside get whipped around. They can scatter the signal and depending on the summation of that effect, cause drop outs. Second, the air tends to refract the signal. So wind can wobble the signal path. There is even [summer fading](https://www.google.com/search?q=summer+microwave+fading&ie=utf-8&oe=utf-8&client=firefox-b-1) of signals.