From the looks of things we'll be in desperate need of a decent warm spell by the time we reach the second-half of May.
To help bring this about, I shall go for an uninspiring 10.7*C which is a whole 1*C below the LTA (1981-2010).
Cheers and here's hoping that does the trick 
EDIT at 9:30 on 1st May:
I didn't expect my trick to work that fast on the GFS model! A westward trend in the positioning of the high-lat blocking and troughs trying to invade from the Atlantic. Stick or twist?! The ECM 00z is not exactly with that but does look very, very strange days 9-10. Trouble is, as May climatologically warms up quite a bit as it goes along, any changes for the middle part of the month could lift the CET outcome dramatically.
I forget what the rules are on late entries (is this even late these days?) but if there is a penalty that is less than (edit at 15:58- 0.7*C not 1), I'd please like to revise my estimate up to an incredibly boring 11.4*C because to be honest I'm just not sure what to trust right now 
Edited by user
01 May 2017 14:58:48
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Reason: Knee-Jerk Reaction Or Clever Revision?
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T-Max: 30.2°C 9th Sep (...!) | T-Min: -7.1°C 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3°C in freezing fog)
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