**Recent forecasts position 26–27°C as the most probable minimum temperatures for Singapore on August 23, aligning with the market's leading implied probabilities (27°C at 39%, 26°C at 22.5%).** Singapore's equatorial location and ongoing southwest monsoon produce consistently warm, humid nights with limited diurnal cooling. Official outlooks and model guidance (including GFS-based runs) indicate overnight lows of 26–27°C under partly cloudy skies and light southeasterly winds, with most nights staying above 27°C. Recent observations show similar values, such as a 26.0°C minimum on August 17 and frequent readings near 27°C, while the long-term August average minimum is approximately 25.3°C. No significant weather systems or deviations from monsoon norms are expected to drive atypical cooling or warming, supporting trader consensus around these thresholds. Forecast updates from agencies like the National Environment Agency or refined model runs ahead of the overnight period could still shift probabilities if cloud cover or wind patterns change.