By Lucy Skoulding Britain is set to be battered by a rainstorm across the country as a map shows the exact date the stormy weather will hit. A new map shows that the wet weather will hit up and down the country, with some parts of Britain plummeting to 0C as the wintery conditions are not over yet. The map from WXCharts shows how a lot of the country will be covered in blue on Tuesday 26 March, indicating heavy rainfall. The downpour will hit the UK at around midnight with heavy rain then expected for 10 hours after that so Brits will likely wake up to the results. By the afternoon of March 26…