"Col" wrote in message ...
The first widespread air frost then?

My lowest min so far has been 3.0C and I think there has been very little
air
frost outside of the Scottish Highlands and a few spots in SE England.
From the 00z GFS run, it's looking like Saturday night will see temperatures
falling to 3C or so quite widely by dawn. The chart for Sunday night into
Monday shows a few zeroes over the Midlands and by Monday night minima are
forecast to be 8s and 9s.

http://64.246.48.81/pics/Rtavn12617.gif (this'll change around 11 AM today).

So, I'd say a widespread ground frost is on the cards but I couldn't say the
same about an air frost. Sunday night is still a fair way off, so I wouldn't
be surprised to see things change a bit before then!