In reply to Mark Eddy:
There has been an active north-south jet stream today and the models say this will continue through to Sunday although less strong.
Of course the sun is warm, but air is cold, we are about 10 deg C below "normal" and have been for some considerable time (like all of April and May).
I hope it does not turn out to be another boreal summer like 2015. Certainly today here at 900 ft near Keswick, it was unpleasantly cold and windy on my patch.
DC