In Panama City's tropical climate during the September rainy season, persistent high humidity near 90-95% and extensive cloud cover typically limit nighttime radiative cooling, anchoring the daily minimum temperature around the climatological average of 24-25°C. Recent observations and model consensus for September 7 showed overnight readings stabilizing near 24-25°C under partly cloudy skies with light winds, supporting the market's heavy weighting toward a 25°C low as the most probable outcome. Forecasters from regional agencies noted no significant cool-air intrusions or clear-sky episodes that would drive the mercury lower, while typical convective activity during the day reinforced stable thermal conditions. With official station data now available for resolution, traders appear to have converged on the 25°C threshold based on these consistent environmental factors and the low likelihood of deviations below 24°C or above 26°C.