I just played a game in rain with a 20 MPH cross-wind. Because the rain was driven by the wind (falling at an angle), I had a visible wind-direction cue from the field. Using the NFL shield logo in the middle of the field as a reference, it appeared that the wind direction was consistent with the choose-a-side graphic shown after the coin toss--that's good. However, kick-offs consistently curved into the wind or up-wind, opposite the direction of the driven rain--that's not so good.