Correction. December 1988 was the warm one of course, not December 1989!


But I would say if the mean temperature for the whole month remains above
4.8ºC here (the 1997 value), it will have been the warmest since 1989 -
which I estimate was exceptional in this area with a mean at around
+6.4ºC. Or an anomally around the value of +3.3ºC.

If that hasn't explained it, I hope it at least gives guidance?
;-)
Alex