A foggy overnight is setting up for a gorgeous Wednesday. “Skills will be mainly clear overnight. Temperatures dip down to about 12 C in London, mild along the shoreline of Lake Erie and between 11 and 13 in Midwestern Ontario,” said CTV London Meteorologist Julie Atchison. “A beautiful Wednesday is setting up sunshine to a mix of sun and cloud through the day.” Heading into the overnight Wednesday, a cold front will move in, creating the possibility for showes and potential thunderstorms. A high of 24 to 26 C over the next few days, Atchison added. Here’s a look at the rest of the forecast Tuesday night: A few clouds. Fog patches developing near midnight. Low 12 C. Wednesday: A mix of sun and cloud. Wind becoming south 20 km/h late in the morning. High 26 C. Humidex 31 C. UV index 7 or high. Thursday: A mix of sun and cloud with 40 per cent chance of showers. High 24 C. Friday: Sunny. High 23 C. Saturday: Sunny. High 25 C. Sunday: A mix of sun and cloud. High 25 C.