Recent forecast model runs from Environment Canada and global ensembles indicate persistent cloud cover and light rain over Toronto on October 11 driven by easterly flow ahead of an approaching frontal system. This setup limits daytime solar heating and caps the maximum near the climatological average of 15.8°C. Differentiating 16°C versus 17°C outcomes hinges on exact timing of precipitation onset and boundary-layer moisture; earlier or heavier rain favors the lower end while delayed clearing could allow brief warming. Higher probabilities for 21°C+ remain low given the entrenched marine influence and lack of warm advection. Updated model guidance and official Environment Canada briefings over the next 48 hours will clarify whether modest temperature revisions shift trader consensus around these closely matched bins.