There is a risk of a thunderstorm Sunday evening as a stretch of cloudy and humid weather rolls in. Environment Canada is calling for grey skies as the night grows, with a high of 27 C. The chance of wet weather increases well into the evening, with a 60 per cent chance of showers and the risk of a thunderstorm. The national weather agency says the overnight low will sit at 18 C. What does the beginning of the week bring? Monday will remain mainly cloudy and turn breezy. The temperature will reach 24 C, with a humidex of 30. On Tuesday the sunshine finally returns with a high of 27 C, before clouds move back in Tuesday night. Barrie residents should prepare for showers and a low of 16 C by the nighttime. The rest of the week looks relatively sunny as we hit mid-August.
