Great work Frank.
Interesting jmm2005 has gone all in on cold.  And sswd guess is just enough apart from mine to enable me to catch him.
Let's hope grandad wins though.

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Late entry just received from Moomin; 3.0c
 

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Chart for this month:-


Link to larger chart 

Definitely some interesting guesses this month - given my rather stellar slide down the table over the last 2-3 months anyone near me probably shouldn't be optimistic!
 

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Prompt submission of predictions again.
Interesting month with a large spread of predictions - including at the top of the table!

December

artzeman  6.83
redmoons 5.85
rickm        5.85
dingle rob 5.80
windywillow 5.70
gusty       5.60
caz          5.60
hungry tiger 5.50
bolty       5.40
springsun 5.20
darren s   4.90
scillydave 4.50
sswd       4.50
ap snowman 4.20
Gavin D   4.20
col           4.02
the professional 4.01
gezm       3.95
splinter    3.86
kendalian 3.70
lanky        3.50
surreyjohn 3.33
snowshoe  3.30
sussex snow magnet 3.10
stomchaser  2.87
frank h       2.70
saint snow 2.40
jmm2005   2.10
hippydave 1.70
grandad    0.90
 

I can confirm that on Tuesday, Frank pm'd me his December prediction of 2.7c. 
 

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Currently wondering if December might- against all odds- single-handedly scupper the highest CET on record chances!
 

I think December will have to be about 1.3°C or colder for 2022 not to be a record. It's been that cold 3 times in the last 100 years, so it's possible, but the odds are very much against it.

If you go by the December to November period, this has already been the warmest year.

Another late entry a few hours ago from Taylor 1740 ; 2.7c
 

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Another late entry a few hours ago from Taylor 1740 ; 2.7c
 

😀Did you say, 'snap'?

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I think December will have to be about 1.3°C or colder for 2022 not to be a record. It's been that cold 3 times in the last 100 years, so it's possible, but the odds are very much against it.

If you go by the December to November period, this has already been the warmest year.

Yes 11.37C from Dec 2021 to Nov 2022 beats any calendar year values - 10.95C being the best Jan-Dec value from 2014

However when looking at any 12 month period like this, there are 3 periods in 2006-7 that all beat 11.37C above with the best of these being May 2006-April 2007 at 11.64C. We would stll need to have a 9.6C in December 2022 to beat this one so highly unlikely to go this year
 

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As far as I can see, the overall 2022 winner of the CET competition will be as follows for the following December CET outcomes.

3.40c and under = JM2005 winner
3.41c to 4.21c = AP Snowman winner
4.22c = AP Snowman / SSWD tied
4.23 to 5.52 = SSWD winner
5.53c = Gusty/ SSWD tied
5.54c to 5.82c = Gusty winner
5.83c = Gusty/ Redmoons tied
5.84c and above = Redmoons winner

A tie would be resolved by a tie breaker which would involve delving into the small print of GW's rules. Not what we want.

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Think I might be in with a chance now having previously expected not to...
surprised how cold everyone's gone . December's burned me too many times, re the cold models... A coldish first week doesn't mean zonality won't suddenly appear and dominate afterwards.
 Everyone seems to know the score, we've seen it all before etc etc ...

Metcheck                      4.37c              Anomaly          -0.37c
Netweather                   4.73c              Anomaly          -0.38c
Peasedown St John       1.28c              Anomaly          -5.55c
Mountsorrel                  5.55c              Anomaly          -0.1c 

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Hadley

3.8c to the 1st

0.7c below the 61 to 90 average
1.9c below the 81 to 10 average

11c CET year still very much on despite likely cold December. 
https://www.metoffice.gov.uk/hadobs/hadcet/cet_info_mean.html 
 

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Yes 11.37C from Dec 2021 to Nov 2022 beats any calendar year values - 10.95C being the best Jan-Dec value from 2014

However when looking at any 12 month period like this, there are 3 periods in 2006-7 that all beat 11.37C above with the best of these being May 2006-April 2007 at 11.64C. We would stll need to have a 9.6C in December 2022 to beat this one so highly unlikely to go this year
 

Good point.  Looking at calender years is somewhat arbitrary, and misses extended periods when the heat is split between two years.

Hadley

3.9c to the 2nd

0.6c below the 61 to 90 average
1.8c below the 81 to 10 average

Metcheck                    4.54c              Anomaly           -0.46c
Netweather                 4.54c              Anomaly           -0.57c
Peasedown  St John      2.87c              Anomaly         -3.96c.
Mountsorrel                4.5c                Anomaly           -0.6c.

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It is interesting to point out that the other warmest years on record do still manage to sneak in a below average month. 2022 being the warmest year, but still managing a below average December would actually be following the trend. Looking at the current top five warmest years:

The current record 2014 had a below average August.
The previous record 2006 had a below average February and March
Third placed 2020 had a cool July and October.
Fourth placed 2011 had a cool summer overall.
And finally 2018 had a cold February and March again.

To get the warmest year on record with all twelve months above average would be pretty unprecedented, by the looks of things.

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Metcheck                    4.54c              Anomaly           -0.46c
Netweather                 4.54c              Anomaly           -0.57c
Peasedown  St John      2.87c              Anomaly         -3.96c.
Mountsorrel                4.5c                Anomaly           -0.6c.

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Tried to reply to Bolty's post but got in a fix- not sure how the 'quote' buttons work.
Anyhow, to reply to Bolty- I think it's a case of that's why those are the warmest on record Scott - because there is only one (or maybe two) below average that sneaked in there. 

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It is interesting to point out that the other warmest years on record do still manage to sneak in a below average month. 2022 being the warmest year, but still managing a below average December would actually be following the trend.

Further to this, there have been been 10 years with 11 above average months, before 2022, but no year so far has managed a clean sweep.

The years with 11 above average months were 1781, 1834, 1945, 1949, 1999, 2003, 2006, 2014, 2017, and now 2022.

The current run of above average months started in June 2021, a total of 18 months so far, which look like it's the longest streak in the CET record. The previous record was the 15 months from April 2006 - June 2007.

(This is based on the 1961 - 1990 average used by the Met Office.)