Singapore’s equatorial location produces minimal seasonal temperature variation, with typical August overnight minima ranging 25–27°C according to long-term climatology and recent forecasts. Drier conditions through mid-August, including several nights remaining above 27°C, have supported the 27°C outcome as the leading market-implied probability at 62%. Official guidance from the Meteorological Service Singapore and numerical weather models indicate light winds and limited cloud cover overnight, keeping the daily minimum near or slightly above the recent average while ruling out significant cooling. The 23°C-or-below outcome at 36% reflects residual uncertainty from possible localized showers or model spread, though such drops remain historically rare in August. Updated observations from the Singapore Changi station and regional analyses will refine these probabilities as the day progresses.