**Persistent southwest monsoon conditions and high humidity are keeping overnight lows elevated across Singapore, with official outlooks from the Meteorological Service Singapore emphasizing minimum temperatures staying above 27°C on most nights through late August.** Recent observations confirm this pattern: August 2026 minimums have typically ranged from 26–28°C, with the lowest recorded value at 26.0°C mid-month amid otherwise warmer-than-average nights. For August 27 specifically, model consensus and station guidance point to overnight lows near 27–28°C under partly cloudy to thundery conditions that limit radiative cooling. Scattered showers and southeasterly or southwesterly winds further suppress temperature drops, while elevated dew points (around 24–26°C) maintain the warm, humid air mass. Historical climatology for late August shows typical lows near 26°C, but the current dry regional conditions and above-average monthly temperatures have shifted the distribution higher. The closely matched market probabilities around 26–29°C reflect uncertainty in exact overnight clearing versus continued cloud cover or shower timing, with official Changi Airport and island-wide observations serving as the resolution benchmark. No major forecast shifts have emerged in the past 48 hours to alter this narrow range.