**Trader sentiment centers on uncertainty in the overnight minimum between 11–13°C, with market-implied probabilities clustered tightly around those levels (12°C and 13°C near 51%, 11°C at 45%).** Official forecasts from Environment Canada and local outlets project a daytime high near 20–22°C under mostly cloudy to clearing conditions, followed by an overnight low of about 10°C as northeasterly winds of 15–20 km/h advect cooler air and skies become partly cloudy after midnight. This range reflects typical early-autumn radiative cooling under moderate wind mixing and a dew point near 6–10°C, which limits how far temperatures can fall. Model consensus and recent observations place the most likely minimum near the historical average low of ~12.9°C for the date, but small differences in cloud timing or wind strength can shift the outcome by 1–2°C. Lower probabilities for 10°C or below align with the risk of stronger cooling if skies clear more than expected, while higher readings remain unlikely given the established cool-air advection. New hourly observations and updated model runs overnight will provide the clearest signals for resolution.