It was a fairly clean record high, too, beating the previous #1 (2006) by
The yearly anomaly was +1.69°C above the record's complete average. The record is 356 years long, though with some issues in the early years.
What's more, the annual average was a record without any individual month setting a record (for its month). The lowest ranked month was April, the 8th warmest April in the record.
Here's a plot of the annual anomalies:
Overall the anomalies kinda balance around 0°C.... Maybe the highs of recent decades are just a rebound from the cold of 1690-1700.... and there is no net warming at all. Maybe. Or maybe not.