Chilly indeed, and very nice too! It looks as though 5 more sites had an air frost (details on Colin's post later). Aboyne met site must be in just the right place for a frost hollow as it is often colder at night than Braemar and Balmoral. These were slightly below 0 and the other sites below were Fyvie Castle (Aberdeenshire) and Kielder Castle (Northumberland). Something about castles obviously. Her Maj has had quite a chilly stay at her castle this year.
Down here the morning chill is incredibly welcome after the warmth of the summer. 1.6C min at nearby Wisley.