Official meteorological observations from Environment Canada stations recorded a daily high of exactly 23°C in Toronto on June 8, establishing the market-implied outcome at near-certainty. This consensus reflects verified surface air temperature data collected under standard protocols at multiple urban and airport sites, consistent with prior model guidance showing stable conditions without significant warming or cooling anomalies. Historical climatology for early June in the region supports typical highs in the low-20s Celsius range absent heatwave influences. Minor uncertainty could arise only from a rare post-publication data revision by the agency, though such adjustments are uncommon for routine daily maxima once quality-controlled reports are released.