**Trader sentiment for Singapore’s August 29 lowest temperature is closely balanced across 26–28 °C (each ~26 %) because official forecasts and ensemble models converge on nighttime minima of roughly 26–28 °C under prevailing southwest-monsoon conditions.** Singapore’s equatorial location produces consistently high humidity (75–90 %) and limited diurnal temperature ranges; recent observations show overnight lows of 25–27 °C, with several nights remaining above 27 °C. Southeast to southwesterly winds of 5–11 mph, combined with partly cloudy skies and scattered thundery showers expected in the late afternoon or evening of the 29th, will moderate radiative cooling. Cloud cover and any late-day rain reduce the potential for deeper nocturnal drops, while clearer intervals could allow brief cooling toward 26 °C. The narrow spread in market-implied odds reflects genuine forecast uncertainty: small differences in cloud timing, shower placement, or local wind patterns at official stations (e.g., Changi) can shift the recorded minimum by 1 °C. Historical August minima average near 25.3 °C, but the current fortnight has trended warmer, supporting the clustered probabilities around 26–28 °C rather than lower extremes. Updated model runs and the Singapore Meteorological Service’s next daily bulletin will be the key near-term catalysts.