BBC Monthly Outlook
SummaryOften wet and mild throughout December
Wednesday 6 December to – Sunday 10 DecemberMilder, and occasionally wet and windy
Monday 11 December to – Sunday 17 DecemberChangeable and turning a bit chillier
Monday 18 December to – Sunday 31 DecemberPeriodically wet and windy
Further aheadIn the next forecast, we will be able to look at what the long range models are saying for early January. We will also see if they stick with the expected milder pattern through the rest of December, and if they hint at anything colder around the New Year.
https://www.bbc.co.uk/weather/outlook