But wouldn't that depend on the precipitation being heavy
Not necessarily heavy (moderate will do), but obviously the heavier the
better.

and the relative humidity being low enough to take on board some of the
latent heat?
Anything less than 100% will give you some cooling.

I'm more thinking of the returning polar-maritime air after the
pre-frontal continental air has been nudge out, i.e. the air mass behind
the [warm] occlusion/sector.
I think that any precipitation will be rain in the following air mass. Will
gives a better description in his reply.
--
Freddie
Bayston Hill
Shropshire
102m AMSL
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