An “anticyclone” is set to destroy an arctic blast which has triggered a cold snap this week as a “heat dome” brings “strong September sunshine”. A high-pressure “anticyclone” of dry, settled weather will become established across the south of England. The large-scale weather system is set to bring dry and settled weather for much of England and Wales. By Sunday, a plume of hot air from the Mediterranean will cause temperatures to rise to 20C. Forecasters say the cold front will move towards Scotland and Northern Ireland – triggering some rain. A frontal system will bring cloud and some outbre…