Traders are betting on a mild high of 6°C or higher in Toronto on March 24 at 39.5% implied probability, driven by the latest Environment Canada and ECMWF numerical weather prediction models forecasting daytime highs around 6-8°C amid a persistent ridge of high pressure ushering warmer southerly flow into southern Ontario. Supporting this, GFS ensembles show a tight cluster near 7°C, with recent observations from March 23 recording overnight lows near 2°C under clear skies, setting up diurnal heating. Historical March 24 averages hover at 5°C, but positive temperature anomalies from an active jet stream pattern bolster upside odds, though model divergence introduces ~20% uncertainty for 4-5°C outcomes. Key watch: afternoon 12Z model runs for final tweaks.