**Forecast consensus for October 1 points to a daily maximum near 31–32 °C, supporting the market’s heavy weighting on those outcomes.** Official and model guidance (including NEA/Meteorological Service Singapore outlooks and international sources) indicates mostly cloudy skies with afternoon thundery showers, typical of the early northeast monsoon transition period. These conditions limit solar heating and cap afternoon peaks. Singapore’s equatorial location produces small day-to-day variability, with historical early-October maxima averaging 31–32 °C. Persistent cloud cover, high humidity (often 70–90 %), and scattered convection reduce the likelihood of exceeding 33 °C or falling to 30 °C or below. Recent regional haze and showers have further moderated temperatures without introducing extreme anomalies. Traders appear to be pricing in this stable, rain-influenced regime, with 32 °C holding the plurality because it matches both climatology and the most probable outcome under current model runs. Updated official forecasts or real-time observations on the day itself remain the key variables that could shift implied probabilities before resolution.