Official observations from Environment Canada confirm a daily minimum of 16°C in Toronto on September 8, aligning with model consensus from the GFS and regional analyses showing mild overnight conditions under partly cloudy skies and light easterly flow. This outcome sits near the 1991–2020 climatological average low of 15.2°C, supported by persistent warm advection from the southwest that limited radiative cooling. Near-100% market-implied odds reflect verified station data with minimal uncertainty in resolution criteria. Only an unreported sensor anomaly or boundary-layer revision could alter the recorded minimum, though such adjustments remain rare for Toronto’s primary observing network.