Richard Dixon wrote in
.163:

"Will Hand" wrote in
:

Well GFS 06Z run has 850 hPa of -7C over London on Saturday. I find
it hard to believe that that would mean a max. of 6C? Clearly GFS has
not been followed, which is fair enough, but it shows the
possibilities, writing this one off 5 days away is far too premature
in my view.

Maybe I'm never particularly overwhelmed by cold
northerly-northwesterlies. Although in fairness - maxima of 3c in
London for Thursday, so clearly not going with that view in the weekly
forecast.

Although midday run much milder...

Richard