2016 in the CET series looks to have been the 18th warmest year since the monthly series began in 1659. It was according to my statistics just +0.02°C warmer than last year. That makes it that 12 of the last 20 years have occurred in the last 20 years, if my eyesight is to be trusted. The mean temperature of 10.33°C was +0.85°C above the 1961-1990 long-term average.
Quite a number of new day maximum records (the eleven red stars in fig 2) were broken in 2016, including the one for Christmas day. Nine new high minimum records were also set (blue diamonds (todo: change colour to red)). Only one new minimum record was set during the year for the 28th of April (blue star). The two lower charts (fig 2) show you the warm and cold spells that occurred during the year, and as you can see the whole year was dominated by warm spells, some of them occasionally very long although it’s difficult to see when viewing an entire year.
This annual heat map (fig 3) makes it very easy to visualise the annual CET anomalies of the last 357 years at a glance.