Official observations from Environment and Climate Change Canada confirm Toronto's highest temperature on May 14 reached 11°C at primary reporting stations like Toronto Pearson International Airport, anchoring trader consensus at a 100% market-implied probability for this outcome. Leading forecasts from the Canadian Meteorological Centre and global models (GFS, ECMWF) had converged on cool conditions driven by a deep upper-level trough ushering northerly winds, persistent cloud cover, and scattered light showers that suppressed daytime heating—well below the mid-May climatological average of 18–20°C. This alignment underscores the wisdom of crowds in aggregating forecast uncertainty. Realistic challenges are rare but could include official data revisions from measurement anomalies or station-specific discrepancies, with final daily climate summaries expected to verify.