With a mean temperature of +6.6c 1-21st, a quick calculation has shown
I need a mean of -21c for the remainder of the month to take my mean
down to Piers' "forecast" of "0.8c at the best". Rather unlikely I think!!

please excuse me correcting myself....should read "need a mean of
-11.7c"

Ian, (Raunds, Northants.)