Here is what my latest tracker is showing. After a very mild start tomorrow we then have 11 consecutive below average days. But not massively below average because there will be too much cloud, precipitation and wind to prevent the temperatures getting too low at night. That is the reason the CET does not fall further. We shall see. Many of us did not see very temperatures in Dec 2010 due to cloud cover but it was still an exceptionally cold month. I still think we will see the CET finish below 3C even if not as low as the 1.8C I have predicted.
Some simple extrapolation from your figures GW:
If we're at 6.5c after 7 days (as per your chart), that's 45.5 degrees 'in the bag'. To finish at 3.0 for the month (93 degrees total), leaves only 47.5 degrees for the remaining 24 days, or an average CET just under 2.0c per day. To finish at 1.8 (= 56 degrees for the month), we'd have to average slightly over 0.4c degrees per day for the rest of the month. I'd love to see either scenario play out (particularly the latter), but that's not looking likely to me as things stand.
As you say, we shall see.....
Thanks, as ever, for all your efforts with the competition.