The UK is enjoying a warm bank holiday weekend, with temperatures reaching 23°C in southern regions and 20°C further north. However, weather forecasts from WXCharts indicate a sudden cold snap may follow, with temperatures potentially plunging to -1°C in areas such as Aberdeenshire, Newcastle upon Tyne, and Lancashire around May 11 and 12. The Met Office reports that Sunday will begin with wet conditions across much of England and Wales, although some improvement is expected later in the day. Monday is likely to remain unsettled, with scattered showers and lingering cloud cover. Deputy Chief Forecaster Mark Sidaway notes that the weather will remain changeable, with a significant drop in temperatures anticipated in northern and northeastern areas from Monday through midweek. Looking ahead, the forecast suggests a mix of sunshine and showers, with potential for drier spells, but rain is likely to develop, particularly in the south and east.