I have flown in sleet/snow on Spitsbergen, at minus 10, with Mavic Pro, no after effects to this day.
Would happily do it again.
And was also flying Friday in 20+ mph winds with Mavic 2 Pro, she flew like there was no wind.
Steady as a rock doing a POI.
The majority of the damp will blast past the drone in the prop-wash and, in my experience, the internals and motors get warm enough for any damp to soon evaporate quickly - and, as Chis says - no long term issues despite many foggy flights.
The camera is well enough sealed for there to be no issues (since I’ve stripped mine down a couple of times [for other reasons] - I can confirm this).
It’s only the outside of the body casing and motor arms that get damp, and this can be easily wiped off.
I have taken both the Mavic2 and Mavic Air up in light fog / mist and I am always surprised how the lens / gimbal is always dry and only a little damp on the upper casing for the Air. They do build up heat especially around the battery cases and the motors. As I say though, only tried in ‘Light’ mist / fog and not the heavy stuff!