On Mon, 24 Jun 2013 18:46:06 +0100, Sacha wrote:

Why does the sun *always* come out, if it's going to emerge at all,
just after we shut on a dreary, grey day?! ;-)

Possibly for the same reason that it is often sunny just after dawn
and you get your hopes raised that it is going to be a bright day.
The sun which has been peeping over the horizon and illuminating your
location from a low level then rises above the clouds and is obscured
for the day until it sinks low enough to shine below the clouds for a
short time before it sets.

G.Harman