In message
,
Graham Easterling writes

.....

As you say, you need to be on the move, not stuck in traffic.

What is interesting are the variations, I'm getting to know all the
local frost hollows. Also, just how rapidly the temperature falls away
from the immediate sea front.

Yup. Before Christmas, went to Woking and back in about an hour. The
evening a pool of cold air had come from the north, not reached
Godalming by say 1830. Something like 5 here, 4 down the road, steeply
down to 2 over last four miles or so, steadily back up to Guildford at
about 4, then variations with terrain and time to 3 on return.
Insignificant in the grand scheme of things, but interesting to watch.
--
Peter Thomas