Brits are in for a weather rollercoaster in the coming days with the hottest weather so-far this year giving way to snow flurries, according to forecasts. Wednesday is set to be the warmest day of the year so far, with temperatures expected to reach around 21C, the Met Office has said but temperatures are set to plunge before the end of the month, forecasters have warned. In some parts of the UK temperatures could be as much as 9°C above the average March temperature , making for an early