The mean temperature for the 1st-15th November was 12.5C – that’s 3.2C higher than our average for the first half of November since the station was set up in 2007. This is by far the warmest start to November that we have recorded. The next warmest was 11.1C for the first half of November 2011, and in no other year has the average for that period exceeded 10C.
The month started with a warm south-easterly airflow, generated by low pressure systems in western Europe and a high over eastern Europe. The high then spread westwards, eventually covering all of continental Europe with a procession of Atlantic lows running along its northern edge. This put us into a warm south-westerly airstream – so although it has been cloudy and wet, the average daily temperature has only twice dipped below 10C and the blanket of cloud has kept the nights warm too.
Forecasters predict cooler weather by the weekend as the European high moves away and the Atlantic lows draw in cold air from the north. With such a warm start to the month, though, this could still turn out to be a very mild November.