Official meteorological observations from Environment and Climate Change Canada stations in the Toronto area recorded a daily maximum of 22°C on October 4, 2026, aligning precisely with the market's dominant 100% implied probability for that outcome. Pre-event forecasts from the National Weather Service equivalent projected a high near 21°C under partly cloudy conditions with light winds, and post-event data confirmed the peak matched historical patterns for early October rather than deviating toward the long-term average of 17.7°C. Trader consensus reflects this verified measurement, with minimal odds on adjacent bins indicating high confidence in the exact threshold. Minor discrepancies in station-specific readings or rounding conventions remain the only plausible variables that could alter resolution, though current data show strong consistency across reporting networks.