Oooh I think we need to get the rule book out for this one
to 1 dec place Caz gets it spot on with 18.2
to 2 dec places Frank H gets it with 18.15 when it was 18.17
There isn't a rule on this as the met office changed their presentation to one decimal place part way through the year.
As i'm involved I deliberately didn't comment on the monthly winner other than offering ambiguous praise to Caz.
With this being GW's competition, its probably best to leave things as they are for the remainder of the year. That is to continue using 2 decimal places for predictions/results.
After that a decision can be taken, hopefully by GW.