Montreal is in for a warm stretch, with Tuesday becoming downright hot. On Monday, expect a high of 23°C with a humidex of 26 — comfortable enough, though morning showers will linger until around noon before skies clear. It will remain mild overnight at 19°C. Tuesday is where the heat really comes out. A high of 29°C is forecast with a humidex climbing to 35. Strong southwest winds gusting up to 60 km/h near midday will offer little relief, but the UV index hits 8 or very high, so sunscreen is highly recommended for anyone spending time outdoors. There’s a 60 per cent chance of showers in the morning before a mix of sun and cloud moves in for the afternoon. By Wednesday, temperatures drop back to 22°C and the humidity eases considerably, with an overnight low dipping to just 5°C.
