Thunderstorms on way as temperatures continue to soar Forecasters predict the UK could see its hottest day of the year on Saturday, with temperatures of 30 degrees, or even 31 degrees, expected. Alexander Burkill, a forecaster at the Met Office, said: "It will be a generally bright day on Saturday, with showers developing in the northern parts of England. There is also a slight chance of showers in the east. There is a chance of showers in East Anglia and south east England and there could be some thunder with torrential downpours - with the greatest risk of these in north east England. Temperatures are expected to return to the average for this time of year on Sunday, with the south east most likely to see thunder. Friday is expected to be largely clear and bright across most of the UK, with some cloud. The hottest day of the year was recorded last Sunday when temperatures reached 29.7 degrees in Bournemouth, with millions of people flocking to beaches and parks across the country to enjoy the sunshine. Ambulance services have also seen the number of calls rise with the warmer weather, particularly from people with breathing problems and alcohol related injuries.