Britain's mild spring weather is about to take a turn as forecasts predict snowfall across 18 counties in England and Wales by April 30. Following a warm spell that saw temperatures reach 26.6C on April 9, the new weather maps from WXCharts indicate that wintry conditions will begin late on April 29, with snow expected to start falling around midnight and peaking at 6am. Wales is likely to experience the heaviest snowfall, particularly in Powys and the Snowdonia region, with up to 4cm of snow anticipated. In England, counties including Gloucestershire, Wiltshire, and areas in the Midlands and North such as Manchester and Huddersfield may also see flurries. The Met Office has warned that cold air will sweep across the UK, leading to potential wintry showers and widespread overnight frost. Although this cold spell is expected to be short-lived, it marks a significant change in weather patterns for the region.