London is in for a mainly cloudy Sunday, with temperatures expected to reach a high of 6 C. Environment Canada is forecasting a 30 per cent chance of showers near Lake Huron, with northwest winds becoming 20 km/h, gusting to 40 km/h. Skies will remain mainly cloudy overnight, with a low of minus 1 C and wind chill values reaching minus 5. Monday will bring similar cloud cover and a high of 8 C, followed by clear skies overnight and a low of minus 3. The sun is expected to return Tuesday, with a high of 10 C and clear skies overnight. Sunny conditions are forecast to continue Wednesday, with temperatures reaching 12 C. Thursday and Friday will bring a mix of sun and cloud, with highs of 12 C and 11 C. Overnight lows are expected to remain around 5 C.