A hot and sunny day is forecast for Wednesday before a more unsettled weather pattern moves into the region later this week. According to Environment Canada, the day starts with sunshine and morning fog patches dissipating early in the day. Expect a high of 29 C, with a humidex value of 34 making it feel significantly warmer. The UV index is expected to reach 9, considered very high. Clear skies are forecast for Wednesday evening before conditions become partly cloudy near midnight. Fog patches are expected to redevelop overnight as winds diminish. The overnight low will be 19 C. Thursday will bring increasing cloud cover and a 60 per cent chance of showers, along with the risk of a thunderstorm., with temperatures climbing to 28 C and a humidex of 34. The unsettled pattern is expected to continue into Friday, with a mix of sun and cloud and a 40 per cent chance of showers. The daytime high will reach 28 C. Looking ahead to Saturday, forecasters are calling for a mix of sun and cloud with a 40 per cent chance of showers and a high of 29 C.