Trader consensus at 100% implied probability for a 15°C high in Moscow on September 8 aligns with verified surface observations and Russian Hydrometeorological Center forecasts of +15 to +17°C daytime under partly cloudy skies, northwesterly winds of 4–11 m/s, and minimal precipitation. Hourly monitoring data showed afternoon peaks of approximately 14.9–15°C, consistent with the date’s climatological average high of 17.9°C yet tempered by cooler northerly flow. This skin-in-the-game positioning reflects aggregated real-capital assessment of official measurements rather than models, with limited scope for revision unless station-specific data adjustments emerge before final resolution.