Re: Can it precipitate during an inversion?

An inversion occurs when the temperature profile versus height above the surface
changes from normal.  The normal mode is for temperature to decrease with
height.  Occasionally, especially in a mountain valley in winter, cold air
(which is denser) can sink down ice-capped mountains.  If warmer air then moves
in above you create an inversion in which its cold at the surface and warm above
instead of the norm.

Now precipitation is usually associated with frontal boundaries between two air
masses.  One air mass is usually cold and dry, the other warm and moist.  Mix
and you get precipitation and "weather." 
BUT, an inversion has an interface between cold air near the surface and warm
air aloft. So you could also have percipitation associated with the inversion
without having a storm front move through. 

One reason "weather" is not usually thought to be associated with an inversion
is that air is more stable when the temperature increases with height above the
surface as compared to when it decreases.  In the normal case (temperature
decreasing with height), the larger the change in temperature with height, the
more unstable the air and the more likely for rising air associated with storms
(and precipitation).