Overview

• Overnight lows near 3°C Wednesday night brought a risk of patchy frost across parts of Toronto and nearby regions.
• Environment Canada issued frost advisories for GTA communities including Vaughan, Markham, Newmarket and Richmond Hill, with another risk into Thursday night and early Friday.
• Showers and thunderstorms on Tuesday ended weeks of mild, dry weather and opened the door to a cooler air mass.
• Daytime highs are tracking near seasonal levels between 14°C and 18°C through the workweek, rising to about 18–19°C by the weekend.
• Forecasts call for abundant sunshine and dry conditions through the Thanksgiving long weekend, with only a chance of cloudier skies on Sunday.