Christmas is almost in the medium term GFS model range but it's well within the GEFS 35 day model range.
www.theweatheroutlook.com/twoforecasts/gefs-35-day.aspx
From the above link, it seems at present that the weight of the various model runs seems to show a below average surface temperature, but settled with high pressure in charge.
Of course it's a way off yet, but I'll keep the thread updated, especially as other models come into range. In the mean time lots of fog for the south of England tomorrow and heavy rain for parts of Scotland. We may see a bit of a warm up coming, but I don't think it will last long.