In message ,
Tudor Hughes writes
On Friday, 1 January 2016 11:16:18 UTC, John Hall wrote:
In message , Dave Cornwell
writes
Summary for December 2015

Temperature (°C):

Mean (min+max) 10.8 (+5.7)

I suspect that that is actually higher than your mean for the calendar
year 2010, which is quite remarkable.
--
John Hall


I doubt if that's quite true if this place is anything to go by
though it's not far off.
December mean here was 10.2°(+5.6) but the annual mean was 10.8°
(+0.6).

I take it that's your annual mean for 2015, though. That's why I
specified the annual mean for 2010 to be compared with, as being the
coldest year within the last couple of decades or so. Your annual mean
anomaly of +0.6 suggests that your average annual mean is 10.2, which
this December's mean has equalled.

One remarkable statistic is the uniformity of max's during the month.
The highest was 14.8°, the lowest 9.1° and the standard deviation of
the daily figures, something I evaluate for each month, was only 1.27°
or about one-third of its normal value for a winter month.

Yes, that is indeed remarkable.
--
John Hall
"Honest criticism is hard to take,
particularly from a relative, a friend,
an acquaintance, or a stranger." Franklin P Jones