January 1916 was the mildest January on record with a CET of 7.5. There was little frost and snow during the month with maxima often in double figures, 17.2C was recorded at Rhyl on the 6th. The weather was unsettled especially in the north as Atlantic lows regularly pushed through maintaining the mild martime airflow across the UK throughout the month.

January 1916 CET: 7.5 (+4.0)
CET mean max: 10.3
CET mean min: 4.7
First half: 7.6
Second half: 7.4

Warmest CET maximum day: 13.2

Coldest CET minimum night: -0.5

Scotland: 5.2
Northern Ireland: 6.2

January 1989 was milder than January 1916 for Northern Ireland and Scotland. Across England and Wales, it was a pretty dry month with an England and Wales rainfall average of 56.6mm

CET trackometer

CET trackometer

1.  10.5
2. 10.0
3.  9.6
4.  9.7
5.  9.3
6.  9.2
7.  9.2
8.  8.7
9.  8.4
10. 8.3
11. 8.2
12. 8.1
13. 7.9
14. 7.6
15. 7.6
16. 7.6
17. 7.6
18. 7.7
19. 7.7
20. 7.7
21. 7.8
22. 7.8
23. 7.6
24. 7.6
25. 7.5
26. 7.6
27. 7.6
28. 7.6
29. 7.6
30. 7.6
31. 7.5

Camden Square data for January 1916

Mean Temp: 7.6C (+4.0)
Mean Max: 10.4C (+4.1)
Mean Min: 4.8C  (+3.6)
Highest Max: 14C on the 1st
Lowest Max: 6.7C on the 31st
Highest Min: 10.1C on the 22nd
Lowest Min: -1.0C on the 23d

Rainfall total: 33.0mm (-17.8mm)
Sunshine: 33.4hrs

Glenquoich recorded a whopping 743mm of rainfall for this month. 

Can we smash this record in 2016 like we did December.

Thanks Kev, an incredible 5 Januarys since 1989 have been over 6C, with a couple more coming close to that figure.

 Cannot see us breaking the CET record for Jan because it is expected to be cooler than Dec but not cold

Average temps, rain and cool zonality rule the roost this month

I think we will not see dominant Azores High this month wafting tropical air over us - more likely average to fairly cool westerlies or North westerlies likely - hence an average month expected

Given that ease by which we beat December..it won't be long before the January record gets breached. Maybe not this year but within the decade I would have thought. 

Expected to be cooler than December gives us a 2 degrees C margin and a bit!