In most cases, teams will try to run the ball more in bad weather, though offensive coaches will often say that receivers have an even bigger advantage when the field is in poor condition. What that means for an IDP is anyone's guess. It usually means less snaps with the clock running and fewer sustained drives. Depending on how successful the OL is, the tackles could go to the line, backers or secondary. Teams that use their strong safety in run support frequently will have better DB stats than others.
I'll often argue that boxscores are highly dependent on the texture of the game and the DBs are most sensitive to that, lining up the furthest from the line. Since there's at least as good a chance that they'll be the eighth unblocked man in the box as the last man to the scrum, I don't know that it's reliable to upgrade or downgrade them. Of the two in question, Jones has been in the box more than Rhodes, though the Jets are using Rhodes up a bit more often in recent weeks. I'd bet on Jones outperforming Rhodes, but that's no different than the rest of the season.