Trader sentiment for Singapore’s June 17 maximum temperature centers on 31°C (37.5% implied probability) as the consensus outcome, driven by the Meteorological Service Singapore’s subseasonal outlook showing drier-than-average conditions across the Maritime Continent during 15–21 June amid the southwest monsoon onset. Equatorial insolation typically produces afternoon highs near 31–32°C, but scattered thundery showers and cloud cover can suppress peaks to 30°C, while reduced rainfall and El Niño-enhanced warming—projected to bring above-average temperatures from June onward—raise the chance of 32°C or higher on clearer days. Official records show early-June maxima reaching 34.1°C when skies cleared, highlighting how short-term convective activity and wind patterns differentiate the tightly bunched 30–32°C outcomes in the market.