Official observations from Environment and Climate Change Canada confirmed a maximum temperature of 26°C in Toronto on August 29, 2026, aligning precisely with the market's sole outcome and driving complete trader consensus. Pre-event forecasts from multiple models anticipated highs of 24–27°C under southwesterly flow and increasing clouds, with actual conditions featuring partly cloudy skies, light rain later, and peak readings matching the lower-to-mid forecast range rather than exceeding it. This outcome sits near the late-August climatological average of roughly 24–25°C, with no significant heat advection or clear-sky amplification to push values higher. Market-implied certainty reflects verified station data resolving the market without ambiguity, though minor discrepancies between urban stations or measurement timing could theoretically have shifted the exact high by 1°C in edge cases.