Most max wind limits for company apply at WLG 60kts (jets and larger t-props) and 50kts (B1900) for most of the operators that go into there.
In reality the limiting factor for the aircraft (more so the pilots) is the shear and sev/extreme turbulence that can exist in those conditions. It can be a 40 - 60 knot wind from 350/010 and be fairly easy to deal with but 30 - 50 knot from 290/350 and my bet is that most operators will be bugging out, not after having a good crack at it
. Generally that is only as the front is passing and will ease within a few hours of the front, that creates these conditions, has passed.
The limiting factor is really the ground handling operations. When the loaders say no then it's more or less shut up shop.