The Met Office has issued a warning for thunderstorms and rain across the UK this weekend, particularly in Northern Ireland and Wales. Meteorologist Alex Deakin noted that much of England will experience a damp and grey start on Saturday, with rain expected to cover nearly all areas. While the north-east of Scotland might see some clear skies, a second band of rain is anticipated to follow the first, bringing heavy showers and an increased risk of thunderstorms. Temperatures will hover around or slightly below June averages, ranging from 15°C in Northern Ireland and Wales to 19°C in eastern England. The BBC forecasts mostly cloudy conditions on Saturday, with rain moving in from the south-west and possible sunny breaks later in the day. Sunday will see variable cloud and showers, mainly in the west, with heavy rain expected on Monday. Tuesday will bring a mix of scattered thundery showers and sunny spells, continuing the unsettled weather pattern.