kold weather Worth noting, a 1.2'C rise in average global temperatures (Actually about 2'C for the UK and mainland Europe) doesn't mean locally extreme hot spells are automatically 1.2'C higher than they would have been. The effect on extremes is greater than that.
Climate change also makes such events occur more likely to occur more frequently. It alters the actual weather synoptics, pressure patterns etc. Not just absolute temperature.