Mine has been outside for several years continuously with no issues, getting rained on regularly. It is fine for outdoor use.
You still need outdoor-rated wires for it, it isn't going to magically make anything you run through it waterproof and it is open on both ends to allow the wire to run through it. But when it gets rained on, water doesn't pool in the protected channel where the wires go if that is what you are asking.
By team W