Overview
- Temperatures are forecast to drop this week, with the Met Office expecting frosts and a chance of snow mainly on higher ground in Scotland, and possibly in Eryri later in the week.
- Yellow rain warnings are in force for parts of southwest Scotland, Northern Ireland and southwest England, with forecasters warning of flooding given recent wet conditions and further heavy rain in Wales.
- WXCharts maps using MetDesk data depict an Arctic outbreak around 23–24 November, with projections of significant snowfall in northern areas including 18–20cm in parts of the Scottish Highlands.
- Official long‑range guidance highlights considerable uncertainty for late November and notes that any snow is most likely to be confined to hills in the north.
- Model signals diverge for Wales, with one run indicating up to 8cm on the Berwyn and Cambrian mountains while others show rain instead, and local forecasts suggest southern counties such as Oxfordshire are likely to avoid wintry conditions.