On Monday, 26 December 2016 09:56:25 UTC, wrote:
The national maximum temperature yesterday (the 25th)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.

Ian Bingham,
Inchmarlo, Aberdeenshire.
80m asl.

Try them, Ian. They can test your thermometer if interested, or just say no..
Ken
Copley