**Forecasts from multiple meteorological sources indicate the overnight low in Istanbul on September 2, 2026, is most likely to settle near 20–22°C.** This range aligns with the market’s strongest implied probabilities, particularly the 61.5% on 22°C. Persistent high pressure over the eastern Mediterranean, combined with light-to-moderate northeasterly flow, is maintaining a stable, subsiding air mass. Clear or mostly clear skies overnight promote radiative cooling, yet the underlying warm seasonal air prevents deeper drops. Model consensus (including ECMWF and GFS guidance referenced in local forecasts) shows nighttime minima holding in the low 20s °C, with daytime maxima reaching 28–30°C. Climatologically, early-September lows in Istanbul average near 17–18°C, so current conditions reflect a modest positive anomaly. No incoming fronts, significant moisture advection, or wind shifts are expected before resolution, keeping the probability distribution tightly clustered around 20–23°C. Updated model runs or surface observations over the next 24–48 hours could refine the exact minimum, but the current setup strongly favors the leading market outcomes.