I was driving in convoy over closed (to non-convoy driving) mountain pass in Norway, in winter. Everything was white, you could barely see the road. Snow was so heavy that visibility stretched as far as the car before me, you couldn't see further than that. At some point a snow plug passed on the other side of the road and completely covered my windshield with snow, to the point that for a few second I had no visibility whatsoever. Good luck to cameras then.
In case it's helpful to know, Lidar also struggles to perform well in heavy snow due to the scattering and reflection of laser beams by snowflakes, which reduces the detectable range and can create false readings.
