On Monday, 26 December 2016 09:56:25 UTC, wrote:

The national maximum temperature yesterday (the 25th December 2016))was 15.1C at Aboyne. However, 15 miles from Aboyne, we measured 15.5C. We have a good open observing site, a Stevenson Screen and the same thermometers the MO use, though these are about 40 years old.

But the MO won't want to know, of course.

Us thaumaturges do though. Especially those of us who like to show off. I don't suppose you know any old fashioned meteorologists that can help you understand what was going on?