Southwestsern Ontario will move from heat and humidity at the start of the week toward more moderate temperatures by midweek. Expect hot and humid conditions Monday, with a mix of sun and cloud and a chance of showers developing later in the day. There is a severe thunderstorm watch in effect. Environment Canada says conditions are favourable for the development of dangerous thunderstorms that may be capable of producing damaging wind gusts, large hail and torrential rain. The forecast calls for a 40 per cent chance of showers Monday afternoon, along with a risk of thunderstorms. The temperature is expected to reach a high of 30 C, with humid conditions making it feel closer to 39. Conditions are expected to remain unsettled Monday night. Environment Canada is forecasting mainly cloudy skies with a 70 per cent chance of showers and a continued risk of thunderstorms. The temperature falls to a low of 19 C. The weather is expected to cool somewhat on Tuesday. Forecasters are calling for mainly cloudy skies with a 40 per cent chance of showers and a risk of thunderstorms. The daytime high is forecast at 25 C, with a humidex value of 31. Wednesday is expected to see a mix of sun and cloud with a high of 25 C, followed by cloudy periods overnight and a low of 15 C. Thursday’s forecast calls for a mix of sun and cloud and a high of 27 C.
