**Trader consensus on the Polymarket strongly favors a maximum temperature of 33°C (67.5% implied probability) for Singapore on September 6, 2026, followed by 34°C (17.5%) and 32°C (8.5%).** These align closely with official and ensemble forecasts showing daytime highs of 31–34°C under prevailing southwest monsoon conditions. Singapore’s equatorial location produces narrow temperature ranges year-round, with September climatological averages of 31.6°C for daily maxima (1991–2020 normals from the Meteorological Service Singapore). Current model guidance from sources including the Met Office, timeanddate.com, and regional forecasts indicates peak readings near 32–33°C on the 6th, driven by southeasterly to southwesterly flow, limited cloud cover in the afternoon, and dry regional conditions that reduce evaporative cooling. Recent observations from early September show similar maxima around 32–33°C amid ongoing dry weather and transboundary haze from Sumatra and Kalimantan, which can modestly enhance surface heating by scattering incoming solar radiation. The modest probability mass on 34°C reflects uncertainty in afternoon instability or slight forecast variations, while lower outcomes (32°C or below) remain possible if morning showers or thicker cloud build-up occur. Resolution will depend on the official daily maximum recorded at Changi or equivalent stations, consistent with typical inter-monsoon or monsoon-transition patterns where brief peaks above the monthly mean are common but extremes beyond 35°C are rare in early September.