Temperatures in London and surrounding areas will feel close to 40 C as the heat warning persists. “Intense heat and humidity. It will be brief, it’s not going to last through the weekend,” said CTV Meteorologist Julie Atchison. “The risk of scattered showers and thunderstorms develop overnight and through the early morning hours. You will likely hear some rumbles of thunder, especially towards the Bruce Peninsula.” Storms could push through first thing in the morning. Upwards of 20 millimetres is expected Wednesday, bringing a mix of sun and cloud by the afternoon. “Then, the risk of thunderstorms once again developing in parts of southern Ontario,” Atchison added. “Lots of instability over the next seven days at temperatures close to where we should be for this time of year.” Here’s a full look at your forecast: Tuesday night: A few clouds. Increasing cloudiness this evening, then a 40 per cent chance of showers late this evening and overnight. Showers beginning before morning, risk of thunderstorms late in the evening and overnight. Low 21 C. Wednesday: Showers ending in the morning, then mainly cloudy with a 40 per cent chance of showers in the afternoon. Showers or thunderstorms beginning late in the afternoon. High 31 C, humidex 41 C. Thursday: Cloudy with 40 per cent chance of showers. High 26 C. Friday: Cloudy with a 30 per cent chance of showers. High 26 C.
