**Persistent dry conditions under the prevailing Southwest Monsoon have driven Singapore’s daytime temperatures higher than the September climatological average of 31.6°C, with official Meteorological Service Singapore forecasts projecting a high of 33–35°C for September 7, 2026.** This aligns with broader regional dryness and southeasterly winds limiting cloud cover and convective cooling, pushing the market-implied probability of 33°C to near-certainty as the consensus outcome. Model runs and historical analogs during similar monsoon phases support this range, though localized afternoon thundery showers or slight shifts in steering flow could cap the peak below 33°C or allow brief exceedance. Traders weigh these variables against real-time observations from stations like Changi, where the official daily maximum determines resolution.