**Recent forecasts from multiple meteorological sources position the minimum temperature in Istanbul on August 30, 2026, near 21–22°C, directly supporting the market's leading outcomes (22°C at 39.5% implied probability, followed closely by 21°C and 23°C).** Official and ensemble guidance, including hourly projections from sources like Yr.no and multi-day outlooks, show overnight lows stabilizing around 21–22°C under clearing skies and moderate northerly flow after scattered showers on prior days. This range reflects typical late-August radiative cooling in Istanbul’s Mediterranean climate, tempered by the moderating influence of the adjacent Sea of Marmara, which prevents sharper drops. Recent model runs indicate limited variability, with daytime highs near 27–29°C and light winds promoting gradual overnight cooling without strong advection of cooler air. Historical norms for the period place average lows in the low-20s°C, reinforcing the tight clustering of trader probabilities around these values while assigning minimal weight to outliers below 20°C or above 24°C. Updated forecasts through the evening of August 29 will provide the final data points before resolution.