Recent forecasts from multiple meteorological sources indicate overnight lows in Istanbul on August 31 will likely settle between 19–22°C under clear skies and light northeasterly winds. This range aligns closely with current market-implied probabilities clustered around 20–22°C, reflecting minor variations across numerical weather prediction models in how quickly radiational cooling occurs after sunset. Stable high-pressure conditions and the absence of incoming fronts or significant moisture have kept forecast spreads narrow, with no major shifts in the past 48 hours. Historical late-August climatology supports typical minimums near 20°C, though exact resolution hinges on precise hourly observations from official stations. Updated model runs and local monitoring over the next 48 hours will refine these estimates.