Temperatures are expected to drop to around 2°C tonight, potentially reaching −1°C north of Highway 401 and leaving windshields covered in frost by morning.
Environment Canada advises protecting frost-sensitive plants, trees, and crops, especially in frost-prone areas. Potted herbs, late-season tomatoes, and other delicate greenery could be at risk, so cover them with a sheet or old towel overnight. Temperatures will rebound quickly. Tuesday will be mainly sunny with a high of 11°C, while Wednesday warms to 16°C under cloudy skies.
Thursday brings unseasonable warmth, with a high of 21°C and a 30% chance of showers. Overnight, temperatures will fall to 9°C, with a 40% chance of showers, making it feel more like September than late October. Friday will be sunny with a high of 16°C. Meanwhile, Halloween on Saturday is forecast to be cloudy with a high of 14°C.
Temperatures are expected to cool in the evening, but the forecast suggests relatively mild conditions for trick-or-treating. The overnight low is expected to be 10°C.
Sunday will remain cloudy with a high of 15°C and a 30% chance of showers, keeping temperatures above seasonal averages.
Forecasts can still change, particularly when it comes to showers, so check Environment Canada before finalizing Halloween plans. For now, protect your garden tonight and keep a light jacket handy for the week ahead.
