Windsor-Essex is moving into a stretch of warm, mostly summery conditions heading into the weekend, with increasing chances of showers and thunderstorms before a wetter start to the new week. Environment Canada says Friday will begin mainly sunny, with clouds increasing late in the morning. Winds will shift to the west at 20 km/h, gusting up to 40 km/h, as temperatures climb to a high of 25 C, with a humidex of 27. Skies will clear somewhat Friday evening, with a few clouds before cloud cover increases again after midnight. The overnight low is expected to dip to 12 C. Saturday brings a mix of sun and cloud, along with a 60 per cent chance of showers and a risk of an afternoon thunderstorm. The high will reach 25 C, with a humidex of 27 and a very high UV index of 8. Saturday night will see cloudy periods, with a 30 per cent chance of showers and a low of 12 C. Conditions improve somewhat Sunday, with a mix of sun and cloud and a high of 24 C. However, clouds will thicken overnight, bringing a 70 per cent chance of rain and a low of 14 C.