How fast does the skin of the airplane cool to surrounding temperatures?

Jim Macklin wrote:

Just remember the snow on the wing does not blow off during
take-off. Moderate snow is snow with the visibility reduced
to not less than 1/2 mile, which is low IFR.

It will if it is freshly fallen snow on a cold wing. Often, it will
blow off just taxing in the wind. I've lost half of the snow on the
wing just taxiing to the pumps. The rest is easily brushed off if it is
fairly fresh and hasn't yet seen above freezing temps.

I'm not recommending using the takeoff as a snow removal technique, but
fresh snow will blow off once a little wind gets on it. I do us this
technique often with my cars and it works great. :-)

Matt