**Trader sentiment for Singapore’s June 16 maximum temperature centers on 31°C as the leading outcome (45.5% implied probability), driven by short-range forecasts showing a daytime high near 31°C amid thundery showers and moderate southwest monsoon flow.** Typical June climatology features average highs of 31°C with high humidity and frequent afternoon convection that caps extreme heating. Current model guidance and agency outlooks emphasize cloud cover and scattered showers limiting temperatures to the 30–32°C range, consistent with the market’s secondary probabilities for 30°C (24.5%) and 32°C (20%). Recent observations from the first half of June, when maxima reached 33–34°C on clearer days, illustrate how reduced cloud cover can push readings higher, yet persistent moisture this week supports the consensus around 31°C. Official resolution will use the Meteorological Service Singapore’s recorded daily maximum, with traders weighting ensemble forecasts and the low historical likelihood of outliers above 33°C or below 29°C under present conditions.