Current short-term forecasts from agencies including Environment Canada and model runs like GFS indicate Toronto's October 5 daytime high will likely fall in the 15–17°C range, near the 1991–2020 average of 17.4°C, supported by clear skies, northwest winds, and a cooler air mass following recent mild conditions. Ensemble guidance shows limited potential for significant warming or anomalous cold, with low precipitation chances reinforcing stable readings. Traders appear to weigh these consensus outputs against historical variability on the date, where highs have ranged from single digits to the mid-20s, while noting that final official measurements from stations like Toronto Pearson will resolve the market.