Recent model consensus from Environment Canada and global ensembles points to a southwesterly flow advecting milder maritime air into southern Ontario, supporting a daytime high near 21–23 °C on October 7 with only a modest chance of showers. This places the market-implied odds for 22–24 °C outcomes at roughly 57 percent, reflecting traders’ weighting of ensemble spreads and historical October variability around Toronto’s climatological mean of about 17 °C. Key differentiating factors include the exact timing of any cloud breaks that could boost insolation and push readings toward 24 °C versus persistent low-level moisture that caps the peak nearer 21 °C. Updated GFS and Canadian model runs expected through the weekend will likely refine these probabilities ahead of market resolution.