The new Quantum Lites are IPX4 rated, that means slashing water from any direction. Basically rain isn't going to hurt it. That Core RXQ30V, Apex, Trails and Helions are all IPX7 rated. That means fully submersible in 3ft of water for 30 minutes. Can't ask for much more than that on any of those models.
Night Vision, Thermal & Accessories
Pulsar, Sightmark, FLIR/Armasight, Trijicon & More