Recent forecasts from multiple models indicate nighttime lows in Karachi around 26–27°C for September 4, driven by persistent cloud cover, light drizzle, and moderate westerly winds from the Arabian Sea that limit nocturnal radiative cooling. High humidity near 80–87% and sea-surface temperatures near 28°C further stabilize minimum readings, consistent with typical early-September post-monsoon conditions where average lows hover near 26°C. Trader sentiment remains closely split because short-range model runs show slight variations in cloud persistence and wind strength that could push the overnight minimum a degree or two either way, while historical data confirm rare excursions below 23°C or above 29°C this early in the month. Updated guidance from regional meteorological services over the next 48 hours will likely clarify whether the current mild, overcast pattern holds.