We’ve probably reached the lowest point now and the output suggests a rise for at least a few days and possibly to month end.  At this stage of the month, it will only be a steady rise and not enough to get anywhere near my 5.6c guess. 

---

Metcheck                1.90c            Anomaly           -3.19c
Netweather             1.8c              Anomaly          -3.31c 
Peasedown St John  1.30c            Anomaly          -5.53c.        

---

Hadley

1.0c to the 19th

3.5c below the 61 to 90 average
3.8c below the 81 to 10 average

The sudden change from well below average daily CET max's back to the new normal mild weather has been very abrupt

The daily max CET increased fro 4C to 13C between Sat 17th and Sun 18th December and this is in the all time top 6 upward daily changes of CET since daily records started in 1878



The only genuinely comparable range from above - being the end of a longish cold spell in a winter month - is that for 1971
 

---

It is looking mainly mild now for the rest of December.  How high will the cet go? 
A final figure of 3c to 4c probably? 

---

Metcheck                  2.15c            Anomaly      -2.84c
Netweather               2.14c            Anomaly      -2.97c
Peasedown St John   1.91c            Anomaly      -4.92c
 

---

Hadley

1.4c to the 20th
3.1c below the 61 to 90 average
3.3c below the 81 to 10 average

Recent GFS runs have given me a final CET estimate somewhere within the high 2s to mid-3s.

That means we have a nail-biting run to the line for Ally Pally Snowman and JMM2005.

By my calculations, a final CET of 3.4°C or higher gives APS the win, otherwise JMM2005 has it.

In fact, there's even a chance that JMM2005 ends up in 3rd place, as Spring Sun Winter Dread sneaks into 2nd, should the final CET come in at 3.5°C or higher.

In fact, the competition is really close all the way down to 6th place. That's the position I'll finish in if the final CET is 3.3°C or higher, while 3.2°C would but me in 5th, 3.1°C in 4th, and 3.0°C or lower in 3rd!

The other two involved in this seriously cramped jostling for position are Frank H (3.3°C to 3.5°C for 5th, 3.2°C for 4th, 3.1°C for 3rd, 3.0°C or lower for 2nd) and Col (3.2°C or lower for 6th, 3.3°C to 3.5°C for 4th, 3.6°C to 4.3°C for 3rd).

Most exciting finalé to the competition that I can recall!

---

Metcheck                   2.42c             Anomaly            -2.67c
Netweather                2.38c             Anomaly            -2.73c
Peasedown St John   2.13c             Anomaly            -4.7c. 

---

Hadley

1.7c to the 21st

2.9c below the 61 to 90 average
3.0c below the 81 to 10 average

Metcheck                     2.51c            Anomaly          -2.48c
Netweather                  2.6c              Anomaly          -2.51c
Peasedown St John     2.57c            Anomaly          -4.29c.

---

Hadley

1.9c to the 22nd

2.7c below the 61 to 90 average
2.8c below the 81 to 10 average

Hadley

1.9c to the 22nd

2.7c below the 61 to 90 average
2.8c below the 81 to 10 average

Now exactly cancelling out November (+2.7C).

Fairly mild run in to new year, except for Boxing Day and the 27th. 

---

Metcheck                    2.74c              Anomaly              -2.26c
Netweather                 2.83c             Anomaly               -2.22c
Peasedown St John   2.71c              Anomaly               -4.12c.               

---

Hadley

2.1c to the 23rd

2.4c below the 61 to 90 average
2.6c below the 81 to 10 average

Metcheck                2.94c             Anomaly         -2.05c
Netweather             3.06c             Anomaly         -2.05c
Peasedown St John  2.71c             Anomaly         -4.12c. 

---

Hadley

2.3c to the 24th

2.2c below the 61 to 90 average
2.4c below the 81 to 10 average

Metcheck                  3.12c               Anomaly            -1.87c
Netweather               3.32c               Anomaly            -1.79c
Peasedown St John     3.11c              Anomaly             -3.72c.   

---

Hadley

2.6c to the 25th

2.0c below the 61 to 90 average
2.1c below the 81 to 10 average

The month has basically been a reverse December 2009 with the first and second halfs swapped round in CET terms. Suspect the final value will end up similar aswell to the 3.1C recorded then